Saving the meanVelocityForce-based momentumSource data

jerkato · December 17, 2020, 13:10

Hi all,

I'm running a 2D steady simulation of the periodic hill case, similar to the steady state OF tutorial case. For the simulation I apply a force in the momentum equation in order to maintain a mean velocity, by using the meanVelocityForces in the fvOptions as follows:

Code:

momentumSource
{
    type            meanVelocityForce;
    active          yes;            //on/off switch

    meanVelocityForceCoeffs
    {
        selectionMode   all;       //cellSet // points //cellZone

        fields      (U);
        Ubar        (0.020188 0 0 );
        relaxation  1.0; 
    }
}

I would like to be able to save the data for this source term at every time step. Can someone please advise if this is possible? If so, how should one go about implementing it.

Cheers,

Diro7 · July 6, 2021, 09:43

Hi Omid,

if I got it right, you were looking for a way to compute/save the acceleration source equivalent to the velocity-correction approach on which meanVelocityForce is based?

Did you find a solution? I'd be interested

Thanks,

Andrea

December 17, 2020, 13:10	Saving the meanVelocityForce-based momentumSource data	#1
jerkato New Member Omid Join Date: Jun 2019 Posts: 1 Rep Power: 0	Hi all, I'm running a 2D steady simulation of the periodic hill case, similar to the steady state OF tutorial case. For the simulation I apply a force in the momentum equation in order to maintain a mean velocity, by using the meanVelocityForces in the fvOptions as follows: Code: momentumSource { type meanVelocityForce; active yes; //on/off switch meanVelocityForceCoeffs { selectionMode all; //cellSet // points //cellZone fields (U); Ubar (0.020188 0 0 ); relaxation 1.0; } } I would like to be able to save the data for this source term at every time step. Can someone please advise if this is possible? If so, how should one go about implementing it. Cheers, Last edited by jerkato; December 17, 2020 at 13:13. Reason: Code not appearing with the right format

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July 6, 2021, 09:43		#2
Diro7 Member Andrea Di Ronco Join Date: Nov 2016 Location: Milano, Italy Posts: 57 Rep Power: 10	Hi Omid, if I got it right, you were looking for a way to compute/save the acceleration source equivalent to the velocity-correction approach on which meanVelocityForce is based? Did you find a solution? I'd be interested Thanks, Andrea