How can I add a source term

danielle · February 29, 2008, 08:31

Hi,
I use twoPhaseEulerFoam, and I need to solve my fields (Ua and Ub) only in one zone. For this I think that I should add a source term which equal to zero in the zone of resolution and like 1.e+20*Ua in the others zones. but I don't know how to do this.
I count on your help

cedric_duprat · February 29, 2008, 12:52

Hi Danielle

I propose you to have a look there :
http://www.cfd-online.com/OpenFOAM_D...html#POST17277
what you need is called a mask function
in this threat, we add a source term on one part of the geometrie and not on the other part. so, the mask function is one on the first part and 0 near.

I hope it will help you

Cedric

February 29, 2008, 08:31	Hi, I use twoPhaseEulerFoam,	#1
danielle Member Danielle PRL Join Date: Mar 2009 Posts: 42 Rep Power: 17	Hi, I use twoPhaseEulerFoam, and I need to solve my fields (Ua and Ub) only in one zone. For this I think that I should add a source term which equal to zero in the zone of resolution and like 1.e+20*Ua in the others zones. but I don't know how to do this. I count on your help

February 29, 2008, 12:52	Hi Danielle I propose you t	#2
cedric_duprat Senior Member Cedric DUPRAT Join Date: Mar 2009 Location: Nantes, France Posts: 195 Rep Power: 17	Hi Danielle I propose you to have a look there : http://www.cfd-online.com/OpenFOAM_D...html#POST17277 what you need is called a mask function in this threat, we add a source term on one part of the geometrie and not on the other part. so, the mask function is one on the first part and 0 near. I hope it will help you Cedric

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