dsmcFoam : writing options : How to keep only field data ? Not Lagrangian

elfuertes · June 24, 2013, 05:48

Hi !

I am running dsmc simulation of a gas flow with dsmcFoam, and I would like to be able to have a better control over the outputs of the simulations.

I want to write the macroscopic fields, and averaged fields at each writeTime
(RhoN, RhoNMean, UMean, ...) and keep them for post-processing.
BUT I do not need all the data included in the lagrangian folder (the properties of each simulated particle, 90% of the memory storage

) I just need this data for the last time step to be able to continue the simulation.

The purgeWrite option does not suit me, as it erases ALL the data (macroscopic + lagrangian)

Is there a way to do what I want ?
Thanks for your help !

Sylvain

jiaoxiaolei · August 18, 2013, 05:41

in Allrun.C,you can find the code

elfuertes · August 19, 2013, 06:05

Thanks, I see the following line in the Allrun file for some dsmc tutorials:

Code:

 
runApplication reconstructPar -noLagrangian

But it only applies to the reconstructPar utility. I would like to erase the lagrangian folders "on the go".

June 24, 2013, 05:48	dsmcFoam : writing options : How to keep only field data ? Not Lagrangian	#1
elfuertes New Member Join Date: Jun 2013 Posts: 12 Rep Power: 13	Hi ! I am running dsmc simulation of a gas flow with dsmcFoam, and I would like to be able to have a better control over the outputs of the simulations. I want to write the macroscopic fields, and averaged fields at each writeTime (RhoN, RhoNMean, UMean, ...) and keep them for post-processing. BUT I do not need all the data included in the lagrangian folder (the properties of each simulated particle, 90% of the memory storage ) I just need this data for the last time step to be able to continue the simulation. The purgeWrite option does not suit me, as it erases ALL the data (macroscopic + lagrangian) Is there a way to do what I want ? Thanks for your help ! Sylvain

August 19, 2013, 06:05		#3
elfuertes New Member Join Date: Jun 2013 Posts: 12 Rep Power: 13	Thanks, I see the following line in the Allrun file for some dsmc tutorials: Code: runApplication reconstructPar -noLagrangian But it only applies to the reconstructPar utility. I would like to erase the lagrangian folders "on the go".

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August 18, 2013, 05:41		#2
jiaoxiaolei New Member Carl Join Date: Dec 2012 Posts: 14 Rep Power: 13	in Allrun.C,you can find the code