Ing. Jan Vančura, Ph.D.
E-mail:   Jan.Vancura@vutbr.cz  Dept.:   Institute of Automotive Engineering Dept. of Motor Vehicles Position:   Assistant Professor Room:   A1/0723

Supervised courses:

• Concept Development of a Car (QA0)

Publications:

• MRÁZ, K.; BARTULI, E.; KROULÍKOVÁ, T.; ASTROUSKI, I.; RESL, O.; VANČURA, J.; KŮDELOVÁ, T.:
  Case study of liquid cooling of automotive headlights with hollow fiber heat exchanger , Elsevier
  journal article in Web of Science
• KROULÍKOVÁ, T.; KŮDELOVÁ, T.; BARTULI, E.; VANČURA, J.; ASTROUSKI, I.:
  Comparison of a Novel Polymeric Hollow Fiber Heat Exchanger and a Commercially Available Metal Automotive Radiator, MDPI
  journal article in Web of Science
• VANČURA, J.:
  Crosswind Sensitivity of Road Vehicles,
  20th International Conference Transport Means 2016 Proceedings Part I, pp.522-527, (2016), KAUNAS UNIV TECHNOLOGY PRESS, K DONELAICIO 73, KAUNAS LT 3006, LITHUANIA
  conference paper
  akce: Transport Means 2016, Juodkrantė, 05.10.2016-07.10.2016
• HEJTMÁNEK, P.; VANČURA, J.; BLAŤÁK, O.:
  Elementary Vehicle Handling Models,
  20th International Conference Transport Means 2016 Proceedings Part I, pp.505-508, (2016), KAUNAS UNIV TECHNOLOGY PRESS, K DONELAICIO 73, KAUNAS LT 3006, LITHUANIA
  conference paper
  akce: Transport Means 2016, Juodkrantė, 05.10.2016-07.10.2016
• HEJTMÁNEK, P.; BLAŤÁK, O.; VANČURA, J.:
  New Approach to Measure the Vehicle Centre of Gravity Height,
  Perners' Contacts, Vol.X, (2015), No.4, pp.18-27, ISSN 1801-674X, Dopravní fakulta Jana Pernera, Univerzita Pardubice
  journal article - other
• ČAVOJ, O.; BLAŤÁK, O.; HEJTMÁNEK, P.; VANČURA, J.:
  Vehicle ride height change due to radial expansion of tires,
  MECCA - Journal of Middle European Costruction and Design of Cars, Vol.13, (2015), No.2, pp.22-27, ISSN 1214-0821, ČVUT v Praze MECCA
  journal article - other
• VANČURA, J.; SLAVÍK, J.:
  Crosswind Sensitivity of Road Vehicles,
  Progress in Vehicle Aerodynamics and Thermal Management, pp.214-229, ISBN 978-3-8169-3322-9, (2015)
  conference paper
  akce: 10th FKFS-Conference Progress in Vehicle Aerodynamics and Thermal Management, Stuttgart, 29.09.2015-30.09.2015
• HEJTMÁNEK, P.; BLAŤÁK, O.; SUCHÝ, J.; VANČURA, J.:
  Comparison of Vehicle Handling Models,
  Perners' Contacts, Vol.X, (2015), No.2, pp.5-16, ISSN 1801-674X, Dopravní fakulta Jana Pernera, Univerzita Pardubice
  journal article - other
• HEJTMÁNEK, P.; BLAŤÁK, O.; KUČERA, P.; PORTEŠ, P.; VANČURA, J.:
  Measuring the yaw mass moment of inertia of vehicle,
  MECCA - Journal of Middle European Costruction and Design of Cars, Vol.XI, (2013), No.1, pp.16-22, ISSN 1214-0821, ČVUT-Praha
  journal article - other
• VANČURA, J.; NOVOTNÝ, P.; PORTEŠ, P.; BLAŤÁK, O.:
  Aerodynamic characteristics computation of open wheel racing car,
  MECCA - Journal of Middle European Costruction and Design of Cars, Vol.2010, (2010), No.1, pp.1-6, ISSN 1214-0821, ČVUT v Praze
  journal article - other
• VANČURA, J.:
  Computation Aerodynamic Characteristic of Open Wheel Racing Car with Utilization of 3D Scanner ATOS,
  Advances in Automotive Engineering, Volume II, pp.111-121, ISBN 978-80-7399-497-6, (2008), Tribun EU
  book chapter

List of publications at Portal BUT

Abstracts of most important papers:

• MRÁZ, K.; BARTULI, E.; KROULÍKOVÁ, T.; ASTROUSKI, I.; RESL, O.; VANČURA, J.; KŮDELOVÁ, T.:
  Case study of liquid cooling of automotive headlights with hollow fiber heat exchanger , Elsevier
  journal article in Web of Science
  Thermal performance of small liquid cooling systems based on polymeric hollow fibers was experimentally studied for the cooling of automotive lighting components integrated with high power Light Emitting Diodes (LEDs). Firstly, the tests with control electric heaters on a printed circuit board (PCB) were performed to precisely measure the thermal performance. The cooling effect of liquid cooling system installed on the PCB board of Skoda Octavia 4 (SK38) and Skoda Enyaq (SK316) was tested as the second step. Results of the testing show that the proposed plastic radiators ensure efficient and uniform cooling of the PCBs and keep the LEDs operation temperature much below the recommended 110 ◦C. As the heat generation is relatively small for liquid cooling (tens of watts), there is only 3–10 l/h flow rate of coolant needed, allowing to operate the plastic radiator with low velocity and pressure drops (below 1 kPa). Additionally, apart from excellent cooling, the tested polymeric radiators are about ten times lighter than their aluminium passive finned competitors.
• KROULÍKOVÁ, T.; KŮDELOVÁ, T.; BARTULI, E.; VANČURA, J.; ASTROUSKI, I.:
  Comparison of a Novel Polymeric Hollow Fiber Heat Exchanger and a Commercially Available Metal Automotive Radiator, MDPI
  journal article in Web of Science
  A novel heat exchanger for automotive applications developed by the Heat Transfer and Fluid Flow Laboratory at the Brno University of Technology, Czech Republic, is compared with a conventional commercially available metal radiator. The heat transfer surface of this heat exchanger is composed of polymeric hollow fibers made from polyamide 612 by DuPont (Zytel LC6159). The cross-section of the polymeric radiator is identical to the aluminum radiator (louvered fins on flat tubes) in a Skoda Octavia and measures 720 x 480 mm. The goal of the study is to compare the functionality and performance parameters of both radiators based on the results of tests in a calibrated air wind tunnel. During testing, both heat exchangers were tested in conventional conditions used for car radiators with different air flow and coolant (50% ethylene glycol) rates. The polymeric hollow fiber heat exchanger demonstrated about 20% higher thermal performance for the same air flow. The efficiency of the polymeric radiator was in the range 80-93% and the efficiency of the aluminum radiator was in the range 64-84%. The polymeric radiator is 30% lighter than its conventional metal competitor. Both tested radiators had very similar pressure loss on the liquid side, but the polymeric radiator featured higher air pressure loss.
• VANČURA, J.:
  Crosswind Sensitivity of Road Vehicles,
  20th International Conference Transport Means 2016 Proceedings Part I, pp.522-527, (2016), KAUNAS UNIV TECHNOLOGY PRESS, K DONELAICIO 73, KAUNAS LT 3006, LITHUANIA
  conference paper
  akce: Transport Means 2016, Juodkrantė, 05.10.2016-07.10.2016
  This work evaluates a methodology which is capable of reliable estimation of road vehicle’s crosswind sensitivity. It is based on a mathematical model of a vehicle which takes aerodynamic loads into account. Validation of this model was conducted by means of technical experiment, when the vehicle crosses through a wind gust as defined by ISO 12021. The influence of individual model inputs on evaluation criteria of vehicle’s crosswind behavior was determined in a sensitivity analysis. It is therefore possible to establish the model error caused by possible inaccuracies of input parameters.
• HEJTMÁNEK, P.; VANČURA, J.; BLAŤÁK, O.:
  Elementary Vehicle Handling Models,
  20th International Conference Transport Means 2016 Proceedings Part I, pp.505-508, (2016), KAUNAS UNIV TECHNOLOGY PRESS, K DONELAICIO 73, KAUNAS LT 3006, LITHUANIA
  conference paper
  akce: Transport Means 2016, Juodkrantė, 05.10.2016-07.10.2016
  Vehicle handling should be considered as one of the most significant factor of the road safety. This paper presents several variations of computational models for the vehicle handling evaluation. The main aim of this approach is to establish a very simple computational model with small number of input parameters and still maintain sufficient accuracy. All models are validated by measurement of step steer input manoeuvre defined by ISO 7401.
• HEJTMÁNEK, P.; BLAŤÁK, O.; VANČURA, J.:
  New Approach to Measure the Vehicle Centre of Gravity Height,
  Perners' Contacts, Vol.X, (2015), No.4, pp.18-27, ISSN 1801-674X, Dopravní fakulta Jana Pernera, Univerzita Pardubice
  journal article - other
  The vertical position of the car’s centre of gravity is one of the main parameters that influence vehicle handling and thus also the active traffic safety. The vehicle handling is nowadays frequently researched with the help of mathematical simulations, but for these it is necessary to provide correct values of the individual parameters of the vehicle. This study presents new approach to the measurement of the centre of gravity height with the help of a device which is primarily designated to measure the vehicle’s moments of inertia. This method utilizes the influence of the centre of gravity height on the value of the measured oscillation period of the designed device. The method is verified, first on the known parameters and then on the two vehicles.