CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   Force Drag vs Length (http://www.cfd-online.com/Forums/cfx/98850-force-drag-vs-length.html)

JEHERZ March 20, 2012 14:24

Force Drag vs Length
 
Hello..

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:confused::confused: help me

ghorrocks March 20, 2012 17:23

You are probably looking for the pressure coefficient. This is routinely drawn for air foil simulations, such as http://www.mh-aerotools.de/airfoils/...tributions.htm

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.


All times are GMT -4. The time now is 09:56.