Implementation of the phase momentum equation in BubbleFoam

Anne Severt · June 11, 2012, 06:42

Dear all,

I´m new to OpenFoam and currently working on understanding the procedure of BubbleFoam. Therefore, I read the article of Henry Weller "Derivation, Modelling ans Solution of the Conditionally Averaged Two-Phase Flow Equations" which is cited in http://openfoamwiki.net/index.php/BubbleFoam. What I don´t fully understand is the connection between Weller´s phase momentum equation and the one implemented in BubbleFoam (see http://openfoamwiki.net/index.php/BubbleFoam section 4.3.1). In both equations, UaEqn and UbEqn, there seems to be a sign error in the liftCoeff term. As Weller describes it, it has to be positive in UaEqn and negative in UbEqn. Can anybody please help me understand this?

Thanks.

StefanoP · November 27, 2013, 04:15

Hi Anne,

can you share with us the paper of Weller. I have some problems to find it!

June 11, 2012, 06:42	Implementation of the phase momentum equation in BubbleFoam	#1
Anne Severt New Member Anne Severt Join Date: May 2012 Posts: 4 Rep Power: 13	Dear all, I´m new to OpenFoam and currently working on understanding the procedure of BubbleFoam. Therefore, I read the article of Henry Weller "Derivation, Modelling ans Solution of the Conditionally Averaged Two-Phase Flow Equations" which is cited in http://openfoamwiki.net/index.php/BubbleFoam. What I don´t fully understand is the connection between Weller´s phase momentum equation and the one implemented in BubbleFoam (see http://openfoamwiki.net/index.php/BubbleFoam section 4.3.1). In both equations, UaEqn and UbEqn, there seems to be a sign error in the liftCoeff term. As Weller describes it, it has to be positive in UaEqn and negative in UbEqn. Can anybody please help me understand this? Thanks.

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November 27, 2013, 04:15		#2
StefanoP New Member Stefano Puggelli Join Date: Sep 2013 Posts: 4 Rep Power: 12	Hi Anne, can you share with us the paper of Weller. I have some problems to find it!