scalarSemiImplicitSource with time-varying values

37269 · October 26, 2021, 08:44

Dear all,

I'm trying to inject some tracer material into my simulation using the scalarSemiImplicitSource (in conjunction with a scalarTransport function object).

All examples usually inject a fixed amount x for a fixed time t. I want to specify time-varying injection values now. So I am looking for a way to get my values into the scalarSemiImplicitSource (e.g. one value per second).

Is there such a way? Or do I have to use the codedSource? (if I have to use the codedSource: How would I implement such a table there?)

Yann · October 26, 2021, 10:17

Hi,

You should be able to define a table, the syntax might change depending of the OpenFOAM version you are using.

ESI-OpenCFD (OpenFOAM-v2106) https://develop.openfoam.com/Develop...plicitSource.H
OpenFOAM foundation (OpenFOAM-9) https://github.com/OpenFOAM/OpenFOAM...plicitSource.H

I hope this helps,
Yann

37269 · October 26, 2021, 10:32

Oh, that was easy. Should have read the header of the source completely! Thanks for pointing out the solution

cana · November 9, 2021, 19:35

Could you post your solution ? I am having a hard time with a similar problem.

October 26, 2021, 08:44	scalarSemiImplicitSource with time-varying values	#1
37269 New Member Join Date: Feb 2016 Posts: 23 Rep Power: 10	Dear all, I'm trying to inject some tracer material into my simulation using the scalarSemiImplicitSource (in conjunction with a scalarTransport function object). All examples usually inject a fixed amount x for a fixed time t. I want to specify time-varying injection values now. So I am looking for a way to get my values into the scalarSemiImplicitSource (e.g. one value per second). Is there such a way? Or do I have to use the codedSource? (if I have to use the codedSource: How would I implement such a table there?)

October 26, 2021, 10:17		#2
Yann Senior Member Yann Join Date: Apr 2012 Location: France Posts: 1,062 Rep Power: 26	Hi, You should be able to define a table, the syntax might change depending of the OpenFOAM version you are using. ESI-OpenCFD (OpenFOAM-v2106) https://develop.openfoam.com/Develop...plicitSource.H OpenFOAM foundation (OpenFOAM-9) https://github.com/OpenFOAM/OpenFOAM...plicitSource.H I hope this helps, Yann 37269 likes this.

October 26, 2021, 10:32		#3
37269 New Member Join Date: Feb 2016 Posts: 23 Rep Power: 10	Oh, that was easy. Should have read the header of the source completely! Thanks for pointing out the solution Yann likes this.

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November 9, 2021, 19:35		#4
cana New Member christopher Join Date: Apr 2017 Posts: 4 Rep Power: 8	Could you post your solution ? I am having a hard time with a similar problem.