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Old 12-06-2020, 02:23 AM   #49 (permalink)
freebeard
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Leaving that question to Cd...
Quote:
If they could be made to direct the airflow, would they also create drag in someway ?
Examples I can think of vary in scale from small (dimples and VGs), to large (Cybertruck's longitudinal edges). Reattachment may net zero. It all seems to be about pressure drag. Is skin friction consistent or does it vary over the wetted area?
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