|November 20, 2010, 02:27||
Drag forces on a cylinder
Join Date: Oct 2010
Posts: 303Rep Power: 9
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: 12,540Rep Power: 97
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.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Incorrect Drag and Drag Coefficient for flow over a cylinder||ozzythewise||Main CFD Forum||8||June 13, 2012 06:24|
|Coefficient DRAG and LIFT - Cylinder 3D||Jwolf||CFX||11||February 4, 2010 06:08|
|Drag on non-infinite cylinder between parallel walls||deltaquattro||Main CFD Forum||0||September 10, 2009 13:01|
|Solver and geometry choose for drag coefficient calculation around circular cylinder at large Re||lin||OpenFOAM Running, Solving & CFD||3||April 16, 2009 10:50|
|Inviscid Drag at subsonic, subcritical Mach #||Axel Rohde||Main CFD Forum||1||November 19, 2001 13:19|