|November 20, 2010, 02:27||
Drag forces on a cylinder
Join Date: Oct 2010
Posts: 303Rep Power: 10
I'm simulating in ANSYS CFX , the flow past a 2D planar cylinder ( of course it is a Dummy 3D problem in CFX.). I've used the following expressions to calculate the Total drag force on the cylinder:
Total drag force = force_x()@cylinder.
Another total drag force =
areaInt(Wall Shear X)@cylinder + areaInt_x(p)@cylinder.
While working with these expressions, which area does CFX consider , the projected area of the cylinder(= Diameter * length) (or) its total surface area ?
|November 20, 2010, 07:09||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,726Rep Power: 99
It integrates over the surface, using the element faces as the things being summed up. So the areas being summed are the element face areas.
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