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Aerothermal Analysis of Vehicle Thermal Soak: Temperature and Heat-Flux Measurements

[+] Author Affiliations
Mahmoud Khaled, Charbel Habchi, Hisham El Hage

Lebanese International University, Beirut, Lebanon

Ahmed El Marakbi

University of Sunderland, Sunderland, UK

Fabien Harambat

PSA Peugeot Citroën, Vélizy Villacoublay, France

Hassan Peerhossaini

Université Paris Diderot, Paris, France

Paper No. FEDSM2013-16124, pp. V01CT19A001; 8 pages
  • ASME 2013 Fluids Engineering Division Summer Meeting
  • Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives
  • Incline Village, Nevada, USA, July 7–11, 2013
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5556-0
  • Copyright © 2013 by ASME


This paper presents an experimental investigation of the underhood thermal behaviors during vehicle thermal soak (when the vehicle stops after a large thermal load) by temperature measurement and separate measurements of convective and radiative heat fluxes. Measurements are carried out on a passenger vehicle in wind tunnel S4 of Saint-Cyr-France. The underhood is instrumented by almost 120 surface and air thermocouples and 20 fluxmeters. Measurements are performed for three thermal functioning conditions, with the engine in operation and the front wheels positioned on the test facility with power-absorption controlled rollers. It was found that in thermal soak the temperature of certain components can increase by almost 80°C (pre-catalyst screen) and that of air zones by almost 40°C (crawl area).

Copyright © 2013 by ASME



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