In the current sustainable development context, car manufacturers have to keep doing efforts to reduce the aerodynamic drag of automotive vehicle in order to decrease their CO2 and greenhouse gas emissions. The cooling airflow, through the engine compartment of vehicles, contributes from 5 to 10 % to the total aerodynamic drag. By means of simplified car geometry, equipped with an engine compartment, the configurations that favor a low contribution to total drag are identified. PIV (particle image velocimetry) velocity measurements in the wake of the geometry allow explaining these drag reductions. Besides, the cooling flow rate is also assessed and gives indications on the configurations that favor the engine cooling.
Experimental investigation on the flow around a simplified geometry of automotive engine compartment
Experimentelle Untersuchung der Durchströmung einer vereinfachten Motorraum-Geometrie
Experiments in Fluids ; 50 , 5 ; 1317-1334
2011
18 Seiten, 18 Bilder, 22 Quellen
Aufsatz (Zeitschrift)
Englisch
Three-Dimensional Navier-Stokes Analysis of Front End Air Flow for a Simplified Engine Compartment
SAE Technical Papers | 1992
|