Numerical Simulation of Transient Thermal Convection of a Full Vehicle

Paper #:
  • 2011-01-0645

Published:
  • 2011-04-12
DOI:
  • 10.4271/2011-01-0645
Citation:
Mukutmoni, D., Alajbegovic, A., and Han, J., "Numerical Simulation of Transient Thermal Convection of a Full Vehicle," SAE Technical Paper 2011-01-0645, 2011, doi:10.4271/2011-01-0645.
Pages:
16
Abstract:

Many critical thermal issues that occur in vehicles are uncovered only under more “thermally stressed” driving conditions that are transient in nature such as abruptly changing vehicle speed or turning off fan and engine. Therefore, for flow simulations to be useful in the vehicle design process, it is imperative that these simulations have the ability to accurately model long term transient thermal convection on full vehicles.

Presented are simulations for a passenger vehicle driving at 60 kilometers per hour followed by a complete stop. The simulations were performed using a coupling between the flow and thermal solver and in the process, taking into account convection, conduction and radiation effects. Temperature predictions were made both under steady state conditions and during the key-off. Good agreement with the measurements was observed.

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