Quote:
Originally Posted by Piwoslaw
My guess is (I don't know if this came up in the other thread, as I didn't get through it) that the 'wedge nose' is to lower the stagnation point and reduce the amount of airflow under the car. The slight increase in skin friction is outweighed by the decrease in undercar drag. Whether this works (and how well) with an almost perfect bellypan - I don't know.
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That was my guess too, but as my tuft test showed me, the majority of the air goes around the sides and over the car.
Note how that a simple flat plate grille block ( in this case my license plate ) directs the air up and over the hood when compared to the brown tuft to the right of the plate .