Drag in twoPhaseEulerFoam

lavdwall · September 28, 2015, 12:16

Hi everyone!

I am looking deeper into the twoPhaseEulerFoam source code. In UEqns.H the following line can be found to include the drag force:

Code:

U1Eqn += fvm::Sp(dragCoeff, U1);

Is this correct? I would think that instead of the velocity U1, the relative velocity U1-U2 should be used here...

Kind regards,
Laurien

geth03 · May 25, 2020, 08:16

you should dig a little deeper,
i think it is implemented correctly,
how an argument is passed doesn't say anything about
the implementation of the function.
what is returned by the function is ultimately important.

September 28, 2015, 12:16	Drag in twoPhaseEulerFoam	#1
lavdwall New Member Laurien Vandewalle Join Date: Jun 2013 Location: Ghent, Belgium Posts: 29 Rep Power: 13	Hi everyone! I am looking deeper into the twoPhaseEulerFoam source code. In UEqns.H the following line can be found to include the drag force: Code: U1Eqn += fvm::Sp(dragCoeff, U1); Is this correct? I would think that instead of the velocity U1, the relative velocity U1-U2 should be used here... Kind regards, Laurien

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May 25, 2020, 08:16		#2
geth03 Senior Member Join Date: Dec 2019 Location: Cologne, Germany Posts: 369 Rep Power: 8	you should dig a little deeper, i think it is implemented correctly, how an argument is passed doesn't say anything about the implementation of the function. what is returned by the function is ultimately important.