# problem in calculating force

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April 12, 2015, 00:36
problem in calculating force
#1
New Member

bhavesh
Join Date: Apr 2015
Posts: 6
Rep Power: 4
hi guys I am working on across wind forces on chimney using ansys fluent. after analysing i tried to calculate force along a line but got an error . warning msg is attached here please help me with this.
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 April 12, 2015, 02:46 #2 Senior Member   Join Date: Mar 2015 Posts: 800 Rep Power: 11 What force are you trying to access and have you saved this variable for CFD-Post to access?

 April 12, 2015, 03:08 #3 New Member   bhavesh Join Date: Apr 2015 Posts: 6 Rep Power: 4 I jus made a line on the surface of chimney and tried to calculate force perpendicular to direction of flow on that line

 April 12, 2015, 03:11 #4 New Member   bhavesh Join Date: Apr 2015 Posts: 6 Rep Power: 4 I want to calculate force and moment (+Z)perpendicular to flow direction (+X).do you know any other method from which I can get desired results

April 12, 2015, 04:48
#5
New Member

John Yu
Join Date: Dec 2014
Posts: 26
Rep Power: 5
Did you want to get the lift up force and moment by the wind induction?

Quote:
 Originally Posted by bhavesh907 I want to calculate force and moment (+Z)perpendicular to flow direction (+X).do you know any other method from which I can get desired results

April 12, 2015, 05:22
#6
New Member

bhavesh
Join Date: Apr 2015
Posts: 6
Rep Power: 4
Quote:
 Originally Posted by fishball Did you want to get the lift up force and moment by the wind induction?
yes I want lift up force and moment

April 12, 2015, 05:36
#7
New Member

John Yu
Join Date: Dec 2014
Posts: 26
Rep Power: 5
What model (DPM or VOF) to simulate the pollutant dispersion?

Quote:
 Originally Posted by bhavesh907 yes I want lift up force and moment

 April 12, 2015, 13:26 #8 New Member   bhavesh Join Date: Apr 2015 Posts: 6 Rep Power: 4 I'm using vof model. no slip condition for chimney wall and slip condition with no shear stress component for atmosphere boundary

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