Thermal management plays a crucial role for the energy efficiency of electrified vehicles. Using numerical flow simulations, the air paths and temperature distributions in the underhood can be identified and optimised early in the development process. However, the numerical method needs to be verified in its accuracy for capturing the important flow features in the underhood. In this study, a numerical approach is developed that is robust with respect to spatial and temporal resolutions as well as to different turbulence models. The methodology is validated against experimental data from LDA measurements. The geometric configurations investigated are representative of electrified vehicles, with one or two front opening designs, two different fans, and with or without a blockage behind. The results showed that for one of the fan installations, although the major flow field structures were well captured, the locations of the peak velocities did not match the experiments. For the second fan, the CFD results agreed well with the measurements.
Numerical Investigation of the Air Flow in a Simplified Underhood Environment
Int.J Automot. Technol.
International Journal of Automotive Technology ; 23 , 6 ; 1517-1527
2022-12-01
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Experimental investigation of the air flow in a simplified underhood environment
SAGE Publications | 2022
|Numerical Investigation of Buoyancy-Driven Flow in a Simplified Underhood with Open Enclosure
SAE Technical Papers | 2013
|Investigation of the Buoyancy Driven Flow in a Simplified Underhood - Part II, Numerical Study
SAE Technical Papers | 2006
|Investigation of the buoyancy driven flow in a simplified underhood - part II, numerical study
Kraftfahrwesen | 2006
|Numerical Simulation of a Bus Underhood Flow
British Library Conference Proceedings | 2003
|