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Old   March 20, 2012, 14:24
Question Force Drag vs Length
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How I could to plot?

force drag vs lenght (model)

I need to know the behaviour the force drag along the lenght of my model.

I found the drag but it was global, with this expression force_z()@body.

I'm sorry my english is bad

I need your help, please help me
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Old   March 20, 2012, 17:23
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Glenn Horrocks
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You are probably looking for the pressure coefficient. This is routinely drawn for air foil simulations, such as

Note that there is also a contribution from viscous wall shear. This is usually small in airfoil simulations as they run at high Reynolds number.

So a combination of pressure and wall shear will determine the force acting on the body. These parameters can be plotted against distance.
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