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-   -   Forces calculation after simulation has finished (http://www.cfd-online.com/Forums/openfoam-post-processing/92318-forces-calculation-after-simulation-has-finished.html)

miuzZz September 9, 2011 17:41

Forces calculation after simulation has finished
 
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

lucaBonfiglio December 5, 2012 16:00

Quote:

Originally Posted by miuzZz (Post 323605)
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!

Littlemeat January 24, 2013 10:49

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?

janepen September 20, 2013 08:17

Does anyone know how to proceed the force calculation after a long simulation (cost several weeks)?

masterd-@gmx.de August 20, 2015 09:56

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!

tas38 August 20, 2015 12:36

Quote:

Originally Posted by masterd-@gmx.de (Post 560356)
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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