doc. Ing. Michal Pohanka, Ph.D.
E-mail:   Michal.Pohanka@vut.cz  WWW:   http://www.heatlab.cz/ Dept.:   Heat Transfer and Fluid Flow Laboratory Position:   Head of Laboratory Room:   D3/210 Dept.:   Heat Transfer and Fluid Flow Laboratory Position:   Associate Professor Room:   D3/210 Dept.:   NeTME Centre Section of Heat Transfer and Fluid Flow Division Position:   Head of Subdivision Room:   D3/210

Supervised courses:

• Methods of Heat Transfer Solution (9PPT)

Publications:

• POHANKA, M.; RESL, O.:
  NOZZLE ORIENTATION EFFECT ON THERMAL CROWN AND STRESS IN THE WORK ROLL
  article in a collection out of WoS and Scopus
• ZELEŇÁK, M.; ŘÍHA, Z.; VOTAVOVÁ, H.; FOLDYNA, J.; SITEK, L.; ŠČUČKA, J.; POHANKA, M.:
  Methods for the behaviour analysis of continuous flat water jet structures, Elsevier
  journal article in Web of Science
• KOTRBÁČEK, P.; POHANKA, M.; CHABIČOVSKÝ, M.:
  Energeticky úsporné systémy pro chlazení horkých povrchů, tepelné zpracování a hydraulické odstranění okují ,
  Hutnické listy, Vol.75, (2022), No.3-4, pp.4-8, ISSN 0018-8069, OCELOT, s.r.o.
  journal article - other
• BELLEROVÁ, H.; POHANKA, M.; RESL, O.:
  HEAT LOSSES OF BLOOM IN THE HOT ROLLING PROCESS,
  Sborník z konference Metal 2022, pp.182-186, ISBN 978-80-88365-06-8, (2022)
  conference paper
  akce: METAL 2022 - 31st International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, 18.05.2022-19.05.2022
• RESL, O.; POHANKA, M.:
  Influence of the remaining water layer on the cooling of moving steel surfaces,
  Metal, pp.288-293, ISBN 978-80-87294-99-4, (2021), Tanger
  conference paper
  akce: METAL 2021 - 30th Anniversary International Conference on Metallurgy and Materials, Brno, 26.05.2021-28.05.2021
• KOMÍNEK, J.; LUKS, T.; POHANKA, M.; HWANG, J. Y.:
  Influence of Segmented Rolls on Homogeneity of Cooling in Continuous Casting, MDPI
  journal article in Web of Science
• POHANKA, M.; KOTRBÁČEK, P.; BARTULI, E.; RAUDENSKÝ, M.:
  ENERGY-EFFICIENT COOLING AND HYDRAULIC DESCALING SYSTEMS, Springer
  journal article in Web of Science
• POHANKA, M.; KOTRBÁČEK, P.; RESL, O.; BELLEROVÁ, H.:
  OPTIMAL HYDRAULIC DESCALING,
  Metal 2020, pp.118-125, ISBN 978-80-87294-97-0, (2020)
  conference paper
  akce: METAL - 2020, 29th International Conference on Metallurgy and Materials , Brno, 23.06.2020-26.06.2020
• KOTRBÁČEK, P.; POHANKA, M.; ZACHAR, M.:
  Energeticky úsporné systémy pro chlazení horkých povrchů a hydraulické odstranění okují,
  Hutnické listy, Vol.72, (2019), No.4, pp.15-22, ISSN 0018-8069
  journal article - other
• RESL, O.; POHANKA, M.:
  THE EFFECT OF REMAINING WATER LAYER ON FINAL TEMPERATURE OF STEEL PLATE DURING HOT ROLLING,
  METAL 2019 Conference Proceedings, pp.355-360, ISBN 978-80-87294-92-5, (2019), Tanger, Ostrava
  conference paper
  akce: METAL 2019, Brno, 22.05.2019-24.05.2019
• POHANKA, M.; HNÍZDIL, M.; KOTRBÁČEK, P.; VOTAVOVÁ, H.:
  Hydraulic descaling of wire coils during pickling program
  article in a collection out of WoS and Scopus
  akce: EUROPEAN OXIDE SCALE CONFERENCE (OXI 2018), London, 11.12.2018-12.12.2018
• RAUDENSKÝ, M.; POHANKA, M.; VOTAVOVÁ, H.; ŘÍHA, Z.; ZELEŇÁK, M.:
  Latest development of hydraulic descaling nozzles
  article in a collection out of WoS and Scopus
  akce: ICLASS18, Chcicago, 22.07.2018-26.07.2018
• KOMÍNEK, J.; LUKS, T.; POHANKA, M.; RAUDENSKÝ, M.; HWANG, J-Y.:
  SECONDARY COOLING OVERLAPPED WITH BEARING HOUSING IN A CONTINUOUS CASTER,
  Sborník konference METAL 2018, pp.1-6, ISBN 978-80-87294-83-3, (2018), Tanger, Ostrava
  conference paper
  akce: METAL 2018, Brno, 23.05.2018-25.05.2018
• VOTAVOVÁ, H.; POHANKA, M.:
  THE COOLING PROCESS IN SPRAY OVERLAP DURING HYDRAULIC DESCALING ,
  Sborník konference METAL 2018, pp.1-6, ISBN 978-80-87294-83-3, (2018), Tanger, Ostrava
  conference paper
  akce: METAL 2018, Brno, 23.05.2018-25.05.2018
• POHANKA, M.; VOTAVOVÁ, H.; RAUDENSKÝ, M.; HWANG, J. Y.; YOU, J. W.; LEE, S. H.:
  THE EFFECT OF WATER TEMPERATURE ON COOLING DURING HIGH PRESSURE WATER DESCALING, Vinča institute of nuclear sciences
  journal article in Web of Science
• RAUDENSKÝ, M.; POHANKA, M.; CHABIČOVSKÝ, M.:
  Local Heat Transfer
  summary research report - contract. research
• POHANKA, M.:
  Studie hydrodynamické vysokotlaké trysky
  summary research report - contract. research
• KOTRBÁČEK, P.; POHANKA, M.:
  Verifikace výpočtů ostřikových parametrů
  summary research report - contract. research
• RAUDENSKÝ, M.; POHANKA, M.:
  Evaluation of secondary cooling
  summary research report - contract. research
• RAUDENSKÝ, M.; POHANKA, M.; CHABIČOVSKÝ, M.:
  Strip Cooling
  summary research report - contract. research
• POHANKA, M.; RAUDENSKÝ, M.; LUKS, T.:
  Study of Impact measurements specified by customer
  summary research report - contract. research
• VOTAVOVÁ, H.; POHANKA, M.:
  EFFECT OF THE SPEED OF FEEDSTOCK ON HEAT TRANSFER COEFFICIENT DURING DESCALING IN HOT ROLLING,
  Sborník konference METAL 2017, pp.261-266, ISBN 978-80-87294-73-4, (2017), Tanger, Ostrava
  conference paper
  akce: METAL 2017, Brno, 24.05.2017-26.05.2017
• RAUDENSKÝ, M.; POHANKA, M.:
  Impact Measurements of Nozzles specified by USS Posco
  summary research report - contract. research
• POHANKA, M.; RAUDENSKÝ, M.; CHABIČOVSKÝ, M.:
  Uniform Cooling Methods Using Laminar and Spray Nozzles
  summary research report - contract. research
• RAUDENSKÝ, M.; POHANKA, M.:
  Studie dynamické vysokotlaké trysky: rozložení impaktních tlaků, erozivní účinky, intenzita a homogenita
  summary research report - contract. research
• POHANKA, M.; RAUDENSKÝ, M.; HWANG, J., Y.; YOU, J., W.; LEE, S. H.; :
  Mutual collision of water jets from adjacent high pressure flat jet nozzles on flat surfaces during hydraulic descaling, Technical faculties of the Josip Juraj Strossmayer University of Osijek
  journal article in Web of Science
• POHANKA, M.; CHABIČOVSKÝ, M.; ONDRUCH, T.:
  Thermophysical properties measurement of scale layer on steel substrate using flash method,
  24th INTERNATIONAL CONFERENCE ON MATERIALSAND TECHNOLOGY, pp.175-175, ISBN 978-961-94088-0-3, (2016), Inštitut za kovinske materiale in tehnologije
  abstract
• POHANKA, M.; VOTAVOVÁ, H.:
  Overcooling in overlap areas during hydraulic Descaling , Istitute of Metals and Technology
  journal article in Web of Science
• POHANKA, M.; HNÍZDIL, M.; KOTRBÁČEK, P.; CHABIČOVSKÝ, M.:
  Comparison of Descaling Nozzles
  summary research report - contract. research
• VOTAVOVÁ, H.; POHANKA, M.:
  Effect of stabilizer length on the performance of high pressure descaling nozzles,
  METAL 2016, 25rd International Conference on Metallurgy and Materials, Conference Proceedings, pp.261-266, ISBN 978-80-87294-67-3, (2016), TANGER Ltd.
  conference paper
  akce: METAL 2016, Brno, 25.05.2016-27.05.2016
• RAUDENSKÝ, M.; HORSKÝ, J.; HRABOVSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.:
  Mechanical Properties of Oxidized Steel Samples by Small Punch Test,
  Hutnické listy, Vol.69, (2016), No.2, pp.10-16, ISSN 0018-8069, Ocelot s.r.o
  journal article - other
• KOMÍNEK, J.; POHANKA, M.:
  Estimation of the Number of Forward Time Steps for the Sequential Beck Approach Used for Solving Inverse Heat Conduction Problems, Istitute of Metals and Technology
  journal article in Web of Science
• POHANKA, M.; ONDROUŠKOVÁ, J.:
  Implicit numerical multidimensional heat-conduction algorithm parallelization and acceleration on a graphics card, Istitute of Metals and Technology
  journal article in Web of Science
• VOTAVOVÁ, H.; POHANKA, M.:
  Study of Water Jet Collision of High Pressure Flat Jet Nozzles for Hydraulic Descaling,
  Engineering Mechanics 2015, pp.152-158, ISBN 978-3-03835-700-1, (2016), Trans Tech Publications
  conference paper
  akce: Engineering Mechanics 2015, Svratka, 11.05.2015-14.05.2015
• HRABOVSKÝ, J.; POHANKA, M.; LEE,P.J.; KANG, J.H.:
  Experimental and numerical study of hot-steel-plate flatness, Istitute of Metals and Technology
  journal article in Web of Science
• POHANKA, M.; RAUDENSKÝ, M.:
  Study of impact pressure of high pressure flat jet nozzles
  summary research report - contract. research
• VOTAVOVÁ, H.; POHANKA, M.:
  Study of Overlapping Area of High Pressure Flat Water Jets Used for Hydraulic Descaling,
  Ph.D. Workshop 2015 Proceedings, pp.24-24, ISBN 978-80-86407-62-3, (2015), Ediční středisko VŠB - TU Ostrava
  conference paper
  akce: Ph.D. Workshop 2015, Ostrava, 10.12.2015-10.12.2015
• POHANKA, M.; RAUDENSKÝ, M.:
  Investigation for Optimal Cooling Methods Using Spray Nozzle
  summary research report - contract. research
• POHANKA, M.; VOTAVOVÁ, H.:
  OVERCOOLING IN OVERLAPPING AREAS DURING HYDRAULIC DESCALING,
  Book of abstracts, pp.199-199, ISBN 978-961-92518-8-1, (2015), Inštitut za kovinske materiale in tehnologije, Ljubljana, Lepi pot 11,
  conference paper
  akce: 23RD INTERNATIONAL CONFERENCE ON MATERIALS AND TECHNOLOGY, Portorož, 27.09.2015-30.09.2015
• KVAPIL, J.; HORSKÝ, J.; POHANKA, M.:
  Stanovení tepelného odporu v kontaktu na základě nestacionárního teplotního měření,
  Hutnické listy, Vol.LXVIII, (2015), No.4, pp.15-19, ISSN 0018-8069, Ocelot s.r.o
  journal article - other
• VOTAVOVÁ, H.; POHANKA, M.; BULEJKO, P.:
  Cooling homogeneity measurement during hydraulic descaling in spray overlapping area,
  METAL 2015 24th International Conference on Metallurgy and Materials, pp.265-270, ISBN 978-80-87294-58-1, (2015), Tanger Ltd Ostrava
  conference paper
  akce: METAL 2015 24th International Conference on Metallurgy and Materials, Brno, 03.06.2015-05.06.2015
• KOMÍNEK, J.; HŘIBOVÁ, V.; POHANKA, M.:
  Methodology of Evaluation of Heat Transfer Experiment on Aluminum sample,
  METAL 2015 Full Texts of Papers, pp.1-6, ISBN 978-80-87294-58-1, (2015), TANGER
  conference paper
  akce: METAL 2015 24th International Conference on Metallurgy and Materials, Brno, 03.06.2015-05.06.2015
• VOTAVOVÁ, H.; POHANKA, M.:
  Study of Water Jets Collision of High Pressure Flat Jet Nozzles for Hydraulic Descaling,
  ENGINEERING MECHANICS 2015 21st International Conference Engineering Mechanics 2015, pp.354-355, ISBN 978-80-86246-42-0, (2015), Institute of Theoretical and Applied Mechanics
  conference paper
  akce: Engineering Mechanics 2015, Svratka, 11.05.2015-14.05.2015
• KOTRBÁČEK, P.; HORSKÝ, J.; LUKS, T.; POHANKA, M.:
  NUMERICAL SIMULATION AND VERIFICATION OF ROLL TEMPERATURE HISTORY DURING ROLLING CAMPAIGN,
  Roll5 2015, pp.1-11, (2015), IOM Communicatiins Ltd
  abstract
  akce: Rolls5 2015, Birmingham, 22.04.2015-24.04.2015
• KVAPIL, J.; POHANKA, M.; HORSKÝ, J.:
  Estimation of the Thermal Contact Conductance From Unsteady Temperature Measurements, Institute of Metals and Technology
  journal article in Web of Science
• POHANKA, M.; RAUDENSKÝ, M.; HNÍZDIL, M.; POLIAK, J.; HŘIBOVÁ, V.; VOTAVOVÁ, H.; BROŽOVÁ, T.:
  Final report - Optimization of Descaling Section for POSCO Himill Plant
  summary research report - contract. research
• KOMÍNEK, J.; POHANKA, M.:
  Estimation of the Number of Forward Time Steps for the Sequential Beck Approach Used for Solving Inverse Heat Conduction Problems,
  22nd INTERNATIONAL CONFERENCE ON MATERIALS AND TECHNOLOGY, pp.122-122, ISBN 978-961-92518-7-4, (2014), Inštitut za kovinske materiale in tehnologije, Ljubljana, Lepi pot 11, Ljubljana, Slovenija
  abstract
• POHANKA, M.; RAUDENSKÝ, M.; HWANG, J.; YOU, J.; LEE, S.:
  Water Temperature Effect on Cooling Intensity for high Pressure Descaling Nozzles, IOM Communications Ltd
  miscellaneous
  akce: European oxide scale conference 2014, London, 12.02.2014-14.02.2014
• POHANKA, M.; RAUDENSKÝ, M.; HNÍZDIL, M.; STRÁNSKÝ, M.; KOMÍNEK, J.:
  Heat Transfer Study of Multi–Jet Nozzle and Spray Nozzle
  summary research report - contract. research
• TSENG, A.; BELLEROVÁ, H.; POHANKA, M.; RAUDENSKÝ, M.:
  Effects of titania nanoparticles on heat transfer performance of spray cooling with full cone nozzle, Elsevier Ltd.
  journal article in Web of Science
• HNÍZDIL, M.; POHANKA, M.; RAUDENSKÝ, M.; CHABIČOVSKÝ, M.; STRÁNSKÝ, M.:
  Cooling Tests: 1/preparation of the samples, 2/ tests to be performed
  summary research report - contract. research
• POHANKA, M.; RAUDENSKÝ, M.; HWANG, J.; YOU, J.; LEE, S.:
  Water jet interaction from adjacent high pressure descaling nozzles,
  Vodní paprsek 2013, pp.179-187, ISBN 978-80-86407-43-2, (2013), Ústav geoniky AV ČR
  conference paper
  akce: Vodní paprsek 2013 - výzkum, vývoj, aplikace, Karolínka, 22.10.2013-24.10.2013
• RAUDENSKÝ, M.; POHANKA, M.; STRÁNSKÝ, M.; HNÍZDIL, M.; KOMÍNEK, J.:
  Heat transfer study of multi-jet nozzle and spray nozzle
  summary research report - contract. research
• HORSKÝ, J.; LUKS, T.; POHANKA, M.; KVAPIL, J.:
  Thermal and friction sensors for roll-gap - development
  summary research report - contract. research
• KVAPIL, J.; POHANKA, M.; HORSKÝ, J.:
  Estimation of Thermal Contact Conductance from unsteady temperature measurements,
  Steelsim 2013, pp.27-33, ISBN 978-80-260-3912-9, (2013), VŠB - Technical university of Ostrava
  conference paper
  akce: 5th International Conference on Modelling and Simulation of Metallurgical Processes in Steelmaking, Ostrava, 10.09.2013-12.09.2013
• ONDROUŠKOVÁ, J.; KOMÍNEK, J.; POHANKA, M.:
  Computing Cooling Intensity from Descaling Experiments,
  Steelsim 2013, pp.19-19, ISBN 978-80-260-3912-9, (2013)
  conference paper
  akce: 5th International Conference on Modelling and Simulation of Metallurgical Processes in Steelmaking, Ostrava, 10.09.2013-12.09.2013
• KOMÍNEK, J.; POHANKA, M.; ONDROUŠKOVÁ, J.:
  Determination of Temperature Dependent Cooling Intensity for the Simulation of In-line Heat Treatment ,
  Conference proceedings of 22nd Conference on metallurgy and materials, pp.34-40, ISBN 978-80-87294-41-3, (2013)
  conference paper
  akce: METAL 2013: 22nd International Conference on Metallurgy and Materials, Brno, 15.05.2013-17.05.2013
• POHANKA, M.; KOMÍNEK, J.; RAUDENSKÝ, M.; HRABOVSKÝ, J.; HNÍZDIL, M.; STRÁNSKÝ, M.:
  Study of technology for good flatness of plate
  summary research report - contract. research
• POHANKA, M.; RAUDENSKÝ, M.; KOTRBÁČEK, P.; HNÍZDIL, M.; ONDROUŠKOVÁ, J.; STRÁNSKÝ, M.:
  Optimization of Descaling and Cooling of Rolls
  summary research report - contract. research
• ONDROUŠKOVÁ, J.; POHANKA, M.; VERVAET, B.:
  HEAT-FLUX COMPUTATION FROM MEASURED-TEMPERATURE HISTORIES DURING HOT ROLLING, Institute of Metals and Technology
  journal article in Web of Science
• RAUDENSKÝ, M.; POHANKA, M.; HRABOVSKÝ, J.; HNÍZDIL, M.; KOMÍNEK, J.; STRÁNSKÝ, M.:
  Study of technology for good flatness of plates - 1st invoice
  summary research report - contract. research
• BELLEROVÁ, H.; TSENG, A.; POHANKA, M.; RAUDENSKÝ, M.:
  Spray cooling by solid jet nozzles using alumina/water nanofluids, Elsevier
  journal article in Web of Science
• RAUDENSKÝ, M.; POHANKA, M.; ONDROUŠKOVÁ, J.; STRÁNSKÝ, M.; KOTRBÁČEK, P.; HNÍZDIL, M.:
  Optimization of Descaling and Cooling of Rolls - final payment
  summary research report - contract. research
• BELLEROVÁ, H.; TSENG, A.; POHANKA, M.; RAUDENSKÝ, M.:
  Heat transfer of spray cooling using alumina/water nanofluids with full cone nozzles, Springer
  journal article in Web of Science
• POHANKA, M.; KOTRBÁČEK, P.:
  Design of cooling units for heat treatment,
  Heat treatment conventional and applications, pp.1-20, ISBN 978-953-51-0768-2, (2012), InTech
  book chapter
• RAUDENSKÝ, M.; POHANKA, M.; ONDROUŠKOVÁ, J.; LUKS, T.; STRÁNSKÝ, M.:
  Heat Transfer Evaluation of Hybrid Mist Nozzles
  summary research report - contract. research
• KVAPIL, J.; HRABOVSKÝ, J.; POHANKA, M.:
  Water chamber geometry and stabilizer construction effect on water pressure distribution of high pressure descaling nozzles, EDP Sciences
  journal article in Web of Science
  akce: Experimental Fluid Mechanics 2011, Jičín, 22.11.2011-25.11.2011
• POHANKA, M.; HNÍZDIL, M.:
  Visualization of the nozzles configuration Inquiry 110395
  summary research report - contract. research
• HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; KVAPIL, J.:
  Research - plant heat transfer measurements
  summary research report - contract. research
• KVAPIL, J.; HRABOVSKÝ, J.; POHANKA, M.:
  Water chamber geometry and stabilizer construction effect on water pressure distribution of high pressure descaling nozzles,
  Experimental Fluid Mechanics 2011, pp.394-404, ISBN 978-80-7372-784-0, (2011)
  conference paper
  akce: Experimental Fluid Mechanics 2011, Jičín, 22.11.2011-25.11.2011
• HORÁK, A.; RAUDENSKÝ, M.; POHANKA, M.; BELLEROVÁ, H.; REICHARDT, T.:
  Research on cooling efficiences of water, emulsions and oil,
  Engineering Mechanics, Vol.18, (2011), No.2, pp.81-89, ISSN 1802-1484
  journal article - other
• ZAHRADNÍK, R.; BOHÁČEK, J.; RAUDENSKÝ, M.; KOTRBÁČEK, P.; POHANKA, M.:
  Stanovení součinitele přestupu tepla pro vzduchové trysky, LPTaP
  report
• ONDROUŠKOVÁ, J.; POHANKA, M.:
  Nonhomogeneous cooling effect on metallurgical structure of material,
  Power System Engineering, Thermodynamics & Fluid Flow, pp.10-16, ISBN 978-80-261-0004-1, (2011)
  conference paper
  akce: 10. ročník konference - Energetické stroje a zařízení, Termomechanika & mechanika tekutin, Plzeň, 16.06.2011-17.06.2011
• BELLEROVÁ, H.; POHANKA, M.:
  Spray cooling by multi-walled carbon nanotubes and Fe nanoparticles,
  Computtaional Methods And Experimental Measurements XV, pp.293-304, ISBN 978-1-84564-540-3, (2011), Witt Press
  conference paper
  akce: 11th International Conference on Advanced Computational Methods and Experimental measurements in Heat Transfer, Tallinn, 14.07.2010-16.07.2010
• RAUDENSKÝ, M.; POHANKA, M.; HNÍZDIL, M.; MARMONIER, F.:
  COOLING SYSTEMS FOR CONTINOUS GALVANIZING LINE,
  20th Anniversary International Conference on Metallurgy and Materials - Metal 2011 - Conference Proceedings - Papers, pp.779-785, ISBN 978-80-87294-24-6, (2011), Tanger Ltd
  conference paper
  akce: Metal 2011 - 20. mezinárodní konference metalurgie a materiálů, Brno, 18.05.2011-20.05.2011
• RAUDENSKÝ, M.; HORSKÝ, J.; HNÍZDIL, M.; KOTRBÁČEK, P.; POHANKA, M.:
  In-Line Heat Treatment and Hot Rolling,
  International conference on advances in materials and processing technologies (AMPT2010), pp.563-568, ISBN 978-0-7354-0871-5, (2010)
  conference paper
  akce: AMPT 2010, Paříž, 24.10.2010-27.10.2010
• BELLEROVÁ, H.; POHANKA, M.:
  Spray cooling by multi-walled carbon nanotubes and Fe nanoparticles,
  Heat Transfer 2010, pp.1-9, ISBN 978-1-84564-540-3, (2010), Wessex Institute of Technology
  conference paper
  akce: 11th International Conference on Advanced Computational Methods and Experimental measurements in Heat Transfer, Tallinn, 14.07.2010-16.07.2010
• HORÁK, A.; RAUDENSKÝ, M.; POHANKA, M.; BELLEROVÁ, H.; REICHARDT, T.:
  Research on Cooling Efficiences of Water, Emulsions and Oil,
  Metallurfical and Mining Industry, Vol.2, (2010), No.4, pp.271-278, ISSN 2076-0507
  journal article - other
• BELLEROVÁ, H.; POHANKA, M.; RAUDENSKÝ, M.; TSENG, A.:
  Spray cooling by water based nanofluids with Al2O3 and TiO2,
  2010IEEE, pp.1-5, ISBN 978-1-4244-5343-6, (2010), IEEE
  conference paper
  akce: 12th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electric Systems, Las Vegas, 02.06.2010-05.06.2010
• ONDROUŠKOVÁ, J.; POHANKA, M.:
  Chladící účinky na pracovní válec ploché trysky versus kuželové trysky,
  Engineering Mechanics 2010 - sborník, pp.135-136, ISBN 978-80-87012-26-0, (2010)
  conference paper
  akce: Engineering mechanics 2010, Svratka, 10.05.2010-13.05.2010
• KVAPIL, J.; POHANKA, M.:
  Water impact measurement of two overlapping high pressure flat jet nozzles using two different methods,
  Engineering Mechanics 2010 - sborník, pp.89-90, ISBN 978-80-87012-26-0, (2010)
  conference paper
  akce: Engineering mechanics 2010, Svratka, 10.05.2010-13.05.2010
• HORSKÝ, J.; POHANKA, M.; KVAPIL, J.:
  Measure Heat Transfer Cahracteristics of Nozzles in Secondary Cooling Zone of CC Machine
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.; BOHÁČEK, J.:
  Měření charakteristik přestupu tepla při chlazení válců vodními tryskami
  report
• HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.; KVAPIL, J.; HRABOVSKÝ, J.; HNÍZDIL, M.; LUKS, T.; SLABÁKOVÁ, J.:
  Laboratory Measurements of HTC on Nozzle Array, Usiminas- Brasil
  report
• KOTRBÁČEK, P.; POHANKA, M.; HORSKÝ, J.; RAUDENSKÝ, M.:
  Modelling of Cooling and Thermal Load of Rolls in Hot Rolling,
  Proceeding 3rd SteelSim 2009, pp.1-8, ISBN 9783200016330, (2009), ASMET
  conference paper
  akce: 3rd SteelSim Conference 2009, Leoben, 08.09.2009-09.09.2009
• HORSKÝ, J.; POHANKA, M.; HNÍZDIL, M.; SLABÁKOVÁ, J.; LUKS, T.:
  HTC Tests, Siemens VAI
  report
• HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; HRABOVSKÝ, J.; HNÍZDIL, M.; BOHÁČEK, J.:
  Heat Transfer Tests
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  Studie - analýza a návrh chlazení válců sochorové stolice a blokovny
  report
• HORSKÝ, J.; RAUDENSKÝ, M.; POHANKA, M.; KOTRBÁČEK, P.; BOHÁČEK, J.; BELLEROVÁ, H.; HRABOVSKÝ, J.; HNÍZDIL, M.:
  Run-Out Table Cooling - 1.Upper Configuration, 2.Bottom Conf., voestalpine Grobblech
  report
• POHANKA, M.; BELLEROVÁ, H.; RAUDENSKÝ, M.:
  Experimental Technique for Heat Transfer Measurements on Fast Moving Sprayed Surfaces,
  Journal of ASTM International, Vol.6, (2009), No.4, pp.1-9, ISSN 1546-962X, Journal of ASTME International
  journal article - other
• RAUDENSKÝ, M.; HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; HNÍZDIL, M.; BELLEROVÁ, H.; LUKS, T.:
  Fundamental study of new descaling technology including conventional descaling therory and optimisation of existing descaling system - POSCO
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; HNÍZDIL, M.; BOHÁČEK, J.; LUKS, T.:
  Fundamental Study of Nozzle Characteristics for Accelerated Cooling
  report
• RAUDENSKÝ, M.; POHANKA, M.; BELLEROVÁ, H.; HRABOVSKÝ, J.; HNÍZDIL, M.:
  Fundamental Study of Nozzle Characteristics for Accelerated Cooling, POSCO- Korea
  report
• HORSKÝ, J.; POHANKA, M.; HRABOVSKÝ, J.; HNÍZDIL, M.; LUKS, T.:
  Optimisation of Work Roll Cooling, voestalpine Stahl, Siemens VAI
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.; BOHÁČEK, J.:
  Fundamental Study of New Technology - Descaling II
  report
• HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.; BOHÁČEK, J.:
  HTC Measurement - Laminar Cooling, voestalpine Stahl
  report
• HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; BOHÁČEK, J.; BELLEROVÁ, H.:
  Rotor Descaler Tests, Siemens VAI
  report
• RAUDENSKÝ, M.; KOTRBÁČEK, P.; HORSKÝ, J.; POHANKA, M.:
  Preparation of boundary conditions and experiments conucted within the EU project " Advanced method to improve work roll life time and surface quality of hot rolled strip by new coupled oil free lubrication and chilling"
  report
• HORSKÝ, J.; HRABOVSKÝ, J.; RAUDENSKÝ, M.; KOTRBÁČEK, P.; POHANKA, M.; STRÁNSKÝ, M.:
  Návrh kolektorů pro chlazení válců a návrh sekundárního ostřiku okují pro dva kalibry profily Trilex 8,5"N na těžké profilové trati, 1.etapa
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  Optimisation of Roll Cooling at Stand No.18 in Cogne
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  Optimisation of Roll Cooling at Stand No.18 in Cogne
  report
• RAUDENSKÝ, M.; KOTRBÁČEK, P.; HORSKÝ, J.; POHANKA, M.; HNÍZDIL, M.:
  Technická spolupráce v rámci řešení VÚ V284 - zvýšení účinnosti prac.válců pro 4ST a 5ST v definovaném členění
  report
• HORSKÝ, J.; RAUDENSKÝ, M.; POHANKA, M.; KOTRBÁČEK, P.:
  HTC Measurements of Nozzles in Secondary Cooling
  report
• HORSKÝ, J.; RAUDENSKÝ, M.; KOTRBÁČEK, P.; POHANKA, M.:
  Modification of Experimental Stand, production of sensor, test plate, headers, performing experiments and their evaluation
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; BELLEROVÁ, H.:
  Etapa E4-2008 Výzkum intenzity chlazení válců válcovacích stolic
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  HTC Measurements
  report
• HORSKÝ, J.; POHANKA, M.; RAUDENSKÝ, M.; KOTRBÁČEK, P.; BELLEROVÁ, H.:
  Experiments for the investigation of heat transfer on hot plates
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.:
  Studie- analýza vlivů možností optimálního chlazení válců kolejnicové válcovací a univrzální tratě TŽ
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; BELLEROVÁ, H.:
  Optimální režim sekundárního chlazení a dodatečná měření ochlazovacích HTC trysek
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.; BOHÁČEK, J.; BELLEROVÁ, H.:
  Effective Roll Cooling - final report
  report
• HORSKÝ, J.; RAUDENSKÝ, M.; KOTRBÁČEK, P.; POHANKA, M.; BOHÁČEK, J.; BELLEROVÁ, H.:
  Improvement of cooling and related lubrication effects in cold rolling of carbon and stainless steel grades - roll
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  Optimalizace hydraulických systémů v procesu válcování - etapa E2 a E4
  report
• POHANKA, M.; HORSKÝ, J.:
  Inverse algorithms for time dependent boundary reconstruction of multidimensional heat conduction model,
  Thermophysics 2007, pp.14-23, ISBN 978-80-227-2746-4, (2007), STU
  conference paper
  akce: Thermophysics 2007, Kočovce, 11.10.2007-12.12.2007
• POHANKA, M.:
  Limitation of thermal inverse algorithm and boundary conditions reconstruction for very fast changes on boundary,
  IM2007, pp.229-230, ISBN 978-80-87012-06-2, (2007)
  conference paper
  akce: Engineering Mechanics 2007, Svratka, 14.05.2007-17.05.2007
• POHANKA, M.; HORSKÝ, J.; JURIGA, A.; PETRUŠKA, J.:
  Optimalizace chlazení kalibrovaných válců, TANGER spol. s.r. o.
  presentation
• RAUDENSKÝ, M.; HORSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.:
  Cooling of Rolls Used in Hot Rolling of Long Products, IOM Communications
  report
  akce: ROLLS4 2007, Birmingham, 14.03.2007-16.03.2007
• BELLEROVÁ, H.; RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  Měření charakteristik přestupu tepla při chlazení válců vodními tryskami
  report
• RAUDENSKÝ, M.; HORSKÝ, J.; BELLEROVÁ, H.; KOTRBÁČEK, P.; POHANKA, M.:
  Návrh kolektorů pro mezistolicové chlazení v podniku Severstal a stanovení jejich chladicích účinků
  report
• RAUDENSKÝ, M.; HORÁK, A.; HORSKÝ, J.; POHANKA, M.; KOTRBÁČEK, P.:
  Hydraulic Descaling Improvement - Findings of Jet Structure on Water Hammer Effect,
  La Revue de Mettallurgie, pp.34-35, (2006), ATS
  presentation
  akce: 27es Journees Siderurgiques Internationales, Paříž, 14.12.2006-15.12.2006
• KOTRBÁČEK, P.; RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.:
  Experimental study of heat transfer in hot rolling, EDP Sciences
  journal article in Web of Science
• POHANKA, M.:
  Estimation of discretization error in time and space domain of numerical heat conduction,
  IM2006, pp.288-289, ISBN 80-86246-27-2, (2006)
  conference paper
  akce: Engineering Mechanics 2006, Svratka, 15.05.2006-18.05.2006
• KOTRBÁČEK, P.; HORSKÝ, J.; RAUDENSKÝ, M.; POHANKA, M.:
  Experimental Study of Heat Transfer in Hot Rolling,
  26 Journees Siderurgiques Internationales, pp.1-2, ISBN 2-911212-05-3, (2005), ATS
  conference paper
  akce: The International ATS Steelmaking Conference, Paříž, 15.12.2005-16.12.2005
• HORSKÝ, J.; VAVREČKA, L.; POHANKA, M.:
  Simulation of Thermal Behaviour of Rolls in Rolling,
  Steelsim 2005, pp.453-461, ISBN 80-239-5005-3, (2005), T-print, s.r.o.
  conference paper
  akce: Steelsim 2005, Brno, 25.09.2005-27.09.2005
• RAUDENSKÝ, M.; KOTRBÁČEK, P.; POHANKA, M.; HORSKÝ, J.:
  Modelling temperature fields in rolls during hot rolling and thermal roll expansion
  report
• RAUDENSKÝ, M., HORSKÝ, J., POHANKA, M.:
  Experimental Study of Heat Transfer in Hot Rolling and Continuous Casting,
  Materials Science, Testing and Informatics II, pp.347-354, ISBN 0-87849-957-1, (2005), Trans Tech Publications LTD
  book chapter
• KOTRBÁČEK, P.; HORSKÝ, J.; RAUDENSKÝ, M.; POHANKA, M.:
  Influence of Parameters of Hydraulic Descaling on Temperature Losses and Surface Quality of Rolled Material,
  Steel Grips, Journal of steel and related materials, Vol.2004, (2004), No.2, pp.367-370, ISSN 1611-4442, GRIPS media GmbH
  journal article - other
  akce: 10th International Conference on Metal Forming - Metal Forming 2004, Krakow, 19.09.2004-22.09.2004
• RAUDENSKÝ, M., HORSKÝ, J., KOTRBÁČEK, P., POHANKA, M., TOŠOVSKÝ, J.:
  Experimental study of parameters influencing efficiency of hydraulic descaling - theory of vapour explosion,
  Hydraulic Descaling, pp.29-38, ISBN 1059475, (2004), IOM Communications Ltd.
  conference paper
  akce: 4th International Conf. on Hydraulic Descaling, London , 07.04.2003-08.04.2003
• POHANKA, M.; WOODBURY, K.:
  Metoda pohyblivého simplexu pro výpočet meziprostorového koeficientu přenosu tepla pro odlévání slitiny,
  Inverse Problems in Engng, Vol.11, (2003), No.5, pp.409-424, ISSN 1029-0281, Taylor&Francis
  journal article - other
• POHANKA, M.:
  Two-dimensional correction of data measured using a large pressure sensor,
  Computational Methods and Experimental Measurements XI, pp.86-84, ISBN 1-85312-969-0, (2003), Witpress
  conference paper
  akce: 11th Conference on Computational Methods and Experimental Measurements, Chalkidiki, 15.05.2003-18.05.2003
• POHANKA, M.:
  Obtaining Temperature Dependent Thermal Properties of Investment Casting Mold,
  Proceedings of IMECE 2002, pp.1-6, ISBN 0791836509, (2002), ASME
  conference paper
  akce: International Mechanical Engineering Congress a nd Expostion 2002/IMECE 2002, New Orleans, LA, 13.11.2002-16.11.2003
• RAUDENSKÝ, M.; HORSKÝ, J.; POHANKA, M.:
  Optimal Cooling of Rolls in Hot Rolling,
  Journal of Materials Processing Technology, Vol.2002, (2002), No.125-126, pp.700-705, ISSN 0924-0136, Elsevier Science B.V.
  journal article - other
• TOŠOVSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.:
  Napjatostní analýza vrstvy okují při procesu odkujení,
  40.mezinárodní konference: Experimentální analýzy napětí, pp.247-251, ISBN 80-01-02547-0, (2002), Vysoké učení technické v Praze
  conference paper
  akce: 40. EAN, Praha, 03.06.2002-06.06.2002
• RAUDENSKÝ, M.; POHANKA, M.; HORSKÝ, J.:
  Combined Inverse Heat Conduction Method for Highly Transient Processes,
  Heat Transfer VII, pp.35-42, ISBN 1853129062, (2002), WITPress
  book chapter
• POHANKA, M.; RAUDENSKÝ, M.:
  Determination of Heat Resistances between Installed Thermocouple and Body Used for Computing Heat Transfer,
  Heat Transfer VII, pp.35-42, ISBN 1853129062, (2002), WITPress
  book chapter
  akce: Inženýrská mechanika 2002, Svratka, 13.05.2002-16.05.2002
• POHANKA, M.; RAUDENSKÝ, M.; HORSKÝ, J.:
  Attainment of more precise parameters of a mathematical model for cooling flat and cylindrical hot surfaces by nozzles,
  Advanced Computational methods in Heat Transfer VI, pp.627-635, ISBN 1-85312-818-X, (2000), WIT Press
  conference paper
  akce: Advanced computational methods in heat transfer VI, Madrid, 26.06.2000-28.06.2000
• POHANKA, M.; RAUDENSKÝ, M.; HORSKÝ, J.:
  Optimization of parameters of a mathematical model for cooling hot surfaces by nozzles,
  ISBN 80-86246-03-5, (2000)
  conference paper
  akce: Inženýrská mechanika 2000, Svratka, 15.05.2000-18.05.2000
• POHANKA, M.; RAUDENSKÝ, M.; HORSKÝ, J.; DRUCKMÜLLER, M.:
  Zpřesnění výpočtových modelů tepelných procesů experimentálním stanovením okrajových podmínek,
  ISBN 80-214-1323-9, (1999)
  conference paper
  akce: Inženýrská mechanika '99, Svratka, 17.05.1999-20.05.1999

List of publications at Portal BUT

Abstracts of most important papers:

• RAUDENSKÝ, M.; POHANKA, M.; VOTAVOVÁ, H.; ŘÍHA, Z.; ZELEŇÁK, M.:
  Latest development of hydraulic descaling nozzles
  article in a collection out of WoS and Scopus
  akce: ICLASS18, Chcicago, 22.07.2018-26.07.2018
  The vast majority of steel production is processed by hot rolling nowadays. The steel is heated to high tem-peratures during the process and a crust of iron oxides (scales) is formed on the surface. This crust must be re-moved prior the rolling. The removal takes place in descalers, a row of high pressure flat jet nozzles, where the jets create a water knife that break the crust and washes the scales away. Heat transfer and fluid flow laboratory in cooperation with Institute of Geonics has been developing a nozzle with a pulsating jet that would increase the mechanical (water hammer) effect on the crust of the scales. So far a new fourth generation of hydrodynamic nozzle was developed. The nozzle generates an oscillating solid jet from side to side while maintaining the flatness of the jet. The mechanism of the oscillation is caused by the internal structure of the nozzle without any moving mechanical parts. The efficiency of the hydrodynamic nozzle is studied by the impact pressure measurements and erosion measurements. Comparison is made with conventional descaling nozzle with similar operating parameters.
• POHANKA, M.; RAUDENSKÝ, M.; HWANG, J., Y.; YOU, J., W.; LEE, S. H.; :
  Mutual collision of water jets from adjacent high pressure flat jet nozzles on flat surfaces during hydraulic descaling, Technical faculties of the Josip Juraj Strossmayer University of Osijek
  journal article in Web of Science
  High energetic water jets sprayed from nozzles are used for scale removal. Special nozzles with flat and very narrow jets for high feed pressure are used. This process, called descaling, is used in hot rolling, for example. A number of jets must be used to cover the total width of a rolled strip. High quality and homogeneity of the descaling process is required. A row of high pressure descaling nozzles is often used. This paper focuses on the area where water streams from adjacent nozzles interact. Water impact measurements were taken for several nozzle configurations and the measuring technique with the results obtained is presented. The water impact pressure for multiple nozzles was computed and the results were compared to the measurements.
• POHANKA, M.; VOTAVOVÁ, H.:
  Overcooling in overlap areas during hydraulic Descaling , Istitute of Metals and Technology
  journal article in Web of Science
  The production and processing of high-quality grades of steel are connected with the oxidation at high temperatures. Unwanted scales are formed on the steel surface, which is usually heated to over 900 °C. These scales are often removed by hydraulic descaling during the production. In most cases where long, flat products are produced, one row of descaling nozzles is used. As these flat jet nozzles are arranged in a row, the water spray from one nozzle interferes with the spray from the neighboring nozzles. This zone is called an overlap area and often even more scales remain here after the descaling process. An increased amount of the scales left behind results in a lower quality of a final product. A typical configuration with an inclination and twist angle of 15° was studied. Heat-transfer coefficients (HTC) and surface temperatures were measured in the overlap area and compared with the values obtained from undisturbed areas. It was found that the overlap area is grossly overcooled. The results were compared with a new configuration, where the twist angle was changed to 0°, and it was found that the overcooling was significantly reduced. The temperature measurement showed that an increased thickness of the scales in the overlap area can also be caused by surface overcooling because the scales change the material properties with the temperature, and they are therefore more difficult to remove. The new configuration with the twist angle of 0° seems promising for improving the quality of hydraulic descaling.
• POHANKA, M.; ONDROUŠKOVÁ, J.:
  Implicit numerical multidimensional heat-conduction algorithm parallelization and acceleration on a graphics card, Istitute of Metals and Technology
  journal article in Web of Science
  Analytical solutions are much less computationally intensive than numerical ones, and moreover, they are more accurate because they do not contain numerical errors; however, they can only describe a small group of simple heat-conduction prob- lems. A numerical simulation of heat conduction is often used as it is able to describe complex problems, but its computational time is much longer, especially for unsteady multidimensional models with temperature-dependent material properties. After a discretization using the implicit scheme, the heat-conduction problem can be described with N non-linear equations, where N is the large number of the elements of the discretized model. This set of equations can be efficiently solved with an iteration of the line-by-line method, based on the heat-flux superposition, although the computational procedure is strictly serial. This means that no parallel computation can be done, which is strictly required when a graphics card is used to accelerate the computation. This paper describes a multidimensional numerical model of unsteady heat conduction solved with the line-by-line method and a modification of this method for a highly parallel computation. An enormous increase in the speed is demonstrated for the modified line-by-line method accelerated on the graphics card, and the durations of the computations for various mesh sizes are compared with the original line-by-line method.
• TSENG, A.; BELLEROVÁ, H.; POHANKA, M.; RAUDENSKÝ, M.:
  Effects of titania nanoparticles on heat transfer performance of spray cooling with full cone nozzle, Elsevier Ltd.
  journal article in Web of Science
  Spray cooling using aqueous titania nanofluids was studied. The temperatures of a testing plate under various spraying conditions were first measured; an inverse heat conduction technique was then applied to convert these measured temperatures into heat transfer coefficients (HTCs). It was found that the HTC increased logarithmically with the volume flux, but was decreased with the increase of the nanoparticle fraction. A correlation analysis was performed to quantify the HTC reduction caused by the increase of nanoparticles, and reconfirmed that the major cause for the HTC reduction was the difference in the impact (or impingement) behavior between solid nanoparticles and fluid droplets. A comparison study of the present findings with the previous published results was also performed and indicated that all results compared were consistent to each other based on the similar spray cooling conditions with different nanofluids or nozzles. The effects by using aquatic titania nanofluids instead of aquatic alumina nanofluids and by using full-cone nozzle instead of solid jet nozzle were specifically assessed and the associated rationales for the differences in these effects were given