Porsche

804

 

A model of the iconic Porsche 804 is run through bramble’s CFD software and the results analysed.

Porsche’s Low Drag Design

The Porsche 804 has a streamlined body to reduce drag, as is common with other cars of this era, but doesn’t feature any downforce generating devices found on later generations of F1 car.

The bodywork is generally clean with minimal flow separations. The windscreen does a reasonable job of surrounding the driver with low energy flow, (to minimise drag) with the edge of the wake hitting the upper portion of the driver’s face.

The boat-tailing at the back of the car can be seen to be achieving the desired effect of minimising the size of the car’s wake.

CFD simulation of Porsche 804 showing drag sources

Drag Sources

The exposed wheels on the Porsche 804 are the largest contributor to drag, accounting for 46% of the total, followed by the body & driver at 37%.

The suspension members make up the remaining 17%, which is perhaps surprising considering their relatively small frontal areas. This is explained by the circular cross sections used in their design that can produce ten times the drag of an equivalent thickness aerofoil section.

Drag Sources

The exposed wheels on the Porsche 804 are the largest contributor to drag, accounting for 46% of the total, followed by the body & driver at 37%.

The suspension members make up the remaining 17%, which is perhaps surprising considering their relatively small frontal areas. This is explained by the circular cross sections used in their design that can produce ten times the drag of an equivalent thickness aerofoil section.

CFD simulation of Porsche 804 showing drag sources

Porsche 804 CFD Videos

If you would like to see more post-processing of this icon formula 1 car, check out the below CFD videos.

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