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-   -   Calculate Force at different points in CFX Post (https://www.cfd-online.com/Forums/cfx/78530-calculate-force-different-points-cfx-post.html)

 niraj12321 July 24, 2010 12:47

Calculate Force at different points in CFX Post

Hi,
I am simulating a flow over an aeroplane wing.
I want to find out the Aerodynamic forces at different points on the surface of the wing.

When I use the force calculator Force_X it just gives me the total force on the 2d surface that is my wing.

How do I find force at different points on this surface?

Thanks.

 ghorrocks July 25, 2010 06:21

There is no force at a point. Only a pressure and shear stress, and resolved over a point it gives zero force.

 niraj12321 July 25, 2010 11:11

So if I wish to find Aerodynamic forces at different nodes, I basically cant?
Is it possible with FLuent or any other software?

 ghorrocks July 25, 2010 18:36

If Fluent can do the impossible then maybe fluent can do it.

But seriously, you do not seem to understand what I am saying. Getting the force at a node is not physically meaningful. Only pressure and shear stress is meaningful. When pressure or shear stress is integrated over an area you then get a force.

 niraj12321 July 26, 2010 12:16

Ohok I get it.
So is there anything that I can calculate at nodes on a surface?

 ghorrocks July 26, 2010 18:39

Pressure and/or shear stress would be a good start.

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