Mapping values with different domains, water channel

lethu · June 20, 2017, 05:47

Hello everyone,

I am trying to simulate particles transport in a water channel.
So first, I have simulated water running in the channel with air on top of it using interFoam. I have unphysical results at the outlet such as in the topic

HTML Code:

https://www.cfd-online.com/Forums/openfoam-solving/93702-channel-flow-using-interfoam.html

I extracted the interface of this case anyway. Now I am trying to run simulation with uncoupledKinematicParcelFoam.
I want to use the latest results of this interFoam simulation, only for the U file, as initial conditions.
Problem is the domain is now smaller than the first simulation (but more cells).

It seems that mapFields is not ok with that.

Does anyone know how to solve this problem ?

I have already studied the hopper tutorial.

Thanks !

lethu · June 22, 2017, 08:39

Maybe mapFields does not work for mapping fields with different geometries but it should not be the case, is it ?

I have put the name of the new patch that has been created and that is kind of slicing the old domain. (in cuttingPatches)

But I still can't map my U field...

If anyone has the solution, thanks !

Old domain :
https://drive.google.com/open?id=0B7...lJ0MG1nd1NFNEU

New domain :
https://drive.google.com/open?id=0B7...1VERS1wMVZ3ODg

June 20, 2017, 05:47	Mapping values with different domains, water channel	#1
lethu New Member Kim Le Join Date: May 2016 Location: Lyon, France Posts: 21 Rep Power: 10	Hello everyone, I am trying to simulate particles transport in a water channel. So first, I have simulated water running in the channel with air on top of it using interFoam. I have unphysical results at the outlet such as in the topic HTML Code: https://www.cfd-online.com/Forums/openfoam-solving/93702-channel-flow-using-interfoam.html I extracted the interface of this case anyway. Now I am trying to run simulation with uncoupledKinematicParcelFoam. I want to use the latest results of this interFoam simulation, only for the U file, as initial conditions. Problem is the domain is now smaller than the first simulation (but more cells). It seems that mapFields is not ok with that. Does anyone know how to solve this problem ? I have already studied the hopper tutorial. Thanks !

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June 22, 2017, 08:39		#2
lethu New Member Kim Le Join Date: May 2016 Location: Lyon, France Posts: 21 Rep Power: 10	Maybe mapFields does not work for mapping fields with different geometries but it should not be the case, is it ? I have put the name of the new patch that has been created and that is kind of slicing the old domain. (in cuttingPatches) But I still can't map my U field... If anyone has the solution, thanks ! Old domain : https://drive.google.com/open?id=0B7...lJ0MG1nd1NFNEU New domain : https://drive.google.com/open?id=0B7...1VERS1wMVZ3ODg