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Consideration of the Thermal Behavior in a Vehicle Underhood by Coupled 0D-1D and 3D Simulations
Technical Paper
2007-04-0061
Sector:
Language:
English
Abstract
In a modern world it is common that an engineer has to take the
decisions based only on results of the simulations. Therefore, it
is necessary to be able to formulate very exact statements on the
behavior of a certain system in each stage of its development
process. For this reason the active integration of the numerical
simulation tools into the vehicle development process has been
increasing strongly during the last years.
This paper focuses on a project which has been executed at
"The Virtual Vehicle Competence Centre." The subject of
the investigation has been the simulation of the underhood flow
taking into consideration the main heat sources located in the
engine compartment. This paper presents the methodology to explore
the effects of the heat sources on the cooling modules and the
possibility to investigate and optimize the heat protection
systems. The complexity of this field demands the coupling of 0D-1D
and 3D methods. This paper points out the biggest challenges of the
coupled Computational Fluid Dynamics (CFD) simulations of the
engine compartment in a passenger car. The cooling components have
been executed at a components test bench and an especially equipped
vehicle has been examined in a climate wind tunnel test bed.