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Reynolds Effects in Cooling Airflow

-a CFD Approach

Lasse Malmkjaer Christoffersen (Institutionen för tillämpad mekanik) ; Lennart Löfdahl (Institutionen för tillämpad mekanik)
Proceedings of the 3rd EACC 2007 European Automotive CFD Conference p. 12. (2007)
[Konferensbidrag, refereegranskat]

Cooling airflow is one of the flow fields of the normal road car that experience the largest influence of varying velocities. As it has to operate equally well at urban driving, as at steady highway cruising, it is of extreme importance that the flow field is kept independent of Reynolds effects. In this study an investigation of the Reynolds effects in the cooling air inlet of a normal road going sedan has been investigated by the use of CFD. The study has been conducted on a baseline air inlet. With the results focusing at the normalized mass flow through the cooling package it is shown that it is of importance how the air inlet has been designed. As such it is recommended that care and attention should be paid to achieve a well performing air inlet over the span of velocities at which road cars operate.

Nyckelord: Road Vehicle Aerodynamics, Reynolds effects, Cooling air flow

Denna post skapades 2008-05-07.
CPL Pubid: 70705


Institutioner (Chalmers)

Institutionen för tillämpad mekanik (1900-2017)



Chalmers infrastruktur