OpenFOAM viscosity model

avila.vc · March 17, 2016, 16:14

Has anyone managed to use liquid viscosity model (powerLaw, for example) with twoPhaseEulerFoam solver?

I have no clue where to start. I tried basing my new solver on twophaseeulerfoam with modifications like those on interFoam to add viscosity models, but no success.

sharonyue · March 18, 2016, 03:41

Hello Avila,

Did you try to increase the viscosity of your dispersed phase? Two-fluid model's capability to handle high-viscosity mixing is not good. For example, if your continual phase is water, and the dispersed's phase viscosity is e.g., 1000mPas. You will notice the dispersed phase is accumulating instead of disperse.

Best,

avila.vc · March 18, 2016, 08:12

Hello.

I tried to increase the viscosity of the continuous phase. It runned ok. The problem is that I want to use powerLaw to model its viscosity.

No luck, so far.

March 17, 2016, 16:14	OpenFOAM viscosity model	#1
avila.vc Member Vinícius da Costa Ávila Join Date: Jul 2015 Location: Porto Alegre, Brazil Posts: 62 Rep Power: 10	Has anyone managed to use liquid viscosity model (powerLaw, for example) with twoPhaseEulerFoam solver? I have no clue where to start. I tried basing my new solver on twophaseeulerfoam with modifications like those on interFoam to add viscosity models, but no success. __________________ Vinícius dC.A.

March 18, 2016, 03:41		#2
sharonyue Senior Member Dongyue Li Join Date: Jun 2012 Location: Beijing, China Posts: 838 Rep Power: 17	Hello Avila, Did you try to increase the viscosity of your dispersed phase? Two-fluid model's capability to handle high-viscosity mixing is not good. For example, if your continual phase is water, and the dispersed's phase viscosity is e.g., 1000mPas. You will notice the dispersed phase is accumulating instead of disperse. Best, __________________ My OpenFOAM algorithm website: http://dyfluid.com By far the largest Chinese CFD-based forum: http://www.cfd-china.com/category/6/openfoam We provide lots of clusters to Chinese customers, and we are considering to do business overseas: http://dyfluid.com/DMCmodel.html

March 18, 2016, 08:12		#3
avila.vc Member Vinícius da Costa Ávila Join Date: Jul 2015 Location: Porto Alegre, Brazil Posts: 62 Rep Power: 10	Hello. I tried to increase the viscosity of the continuous phase. It runned ok. The problem is that I want to use powerLaw to model its viscosity. No luck, so far. __________________ Vinícius dC.A.

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