# Forces calculation after simulation has finished

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 September 9, 2011, 17:41 Forces calculation after simulation has finished #1 New Member   Join Date: Aug 2011 Posts: 1 Rep Power: 0 Hi guys, I would like to know if there is a way to calculate forces and/or force coefficients after the simulation is already finished, without having to re-simulate from the start. Thanks

December 5, 2012, 16:00
#2
New Member

Luca Bonfiglio
Join Date: Oct 2011
Posts: 9
Rep Power: 6
Quote:
 Originally Posted by miuzZz Hi guys, I would like to know if there is a way to calculate forces and/or force coefficients after the simulation is already finished, without having to re-simulate from the start. Thanks
Hi, did you manage how to solve this problem. I'm stuck with the same problem!

 January 24, 2013, 10:49 #3 New Member   Join Date: Jul 2012 Posts: 1 Rep Power: 0 Do you really need the forces from each timestep? Why dont you just run the calculation for a couple more iterations and evaluate it then?

 September 20, 2013, 08:17 #4 New Member   John Peng Join Date: Oct 2012 Location: NL Posts: 6 Rep Power: 5 Does anyone know how to proceed the force calculation after a long simulation (cost several weeks)?

 August 20, 2015, 09:56 #5 New Member   Join Date: May 2015 Posts: 7 Rep Power: 3 Hello everybody, did anyone solve the problem? I would like to know if you can wirte out forces from your timesteps after the simulation has finished. And if it works how would I do this? thx for replies!

August 20, 2015, 12:36
#6
Senior Member

Troy Snyder
Join Date: Jul 2009
Location: Akron, OH
Posts: 120
Rep Power: 10
Quote:
 Originally Posted by masterd-@gmx.de Hello everybody, did anyone solve the problem? I would like to know if you can wirte out forces from your timesteps after the simulation has finished. And if it works how would I do this? thx for replies!
You can execute the following to generate the wallShearStress variable:
Code:
`wallShearStress`
Now you can integrate pressure and wall shear stress to get the viscous and
normal components acting on a particular patch:
Code:
```patchIntegrate p <patchName>
patchIntegate wallShearStress <patchName>```

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