Induced drag, pressure drag, viscous drag.
I am having problems understanding the fluent results regarding the drag obtained by fluent (pressure drag and viscous drag).
Pressure drag and viscous drag comes form the parasite drag. Induced drag is not related to pressure drag neither viscous drag because it is related to the generation of lift. So how can I obtain the induced drag with fluent? I have read that by having the value of drag with 0 lift, and subtracting the value of drag at another angle of attack, it will give the induced drag. I don't thing this solution is accurate. Does someone know how to do that? Many thanks:) |
The total drag is the sum of parasitic drag and induced drag. The parasitic drag is the sum of pressure and viscous drag. You just need to subtract the parasitic drag from the total drag to get the induced drag, maybe.
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Thanks for the answer luckytran.
The problem is that fluent only gives the results of pressure and viscous drag (parasite drag), not the total drag. So the induced drag does not appears anywhere. And for the other method, how could fluent gives the vector projection of the effective lift? |
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