[RaghavendraRohith]

Hi,

Can somebody clarify why should the p_rgh (Dynamic pressure) must be set to 1e5. I am trying to simulate a wetting process using compressibleInterFoam. The simulation is very unstable when the following B.C. have been used

dimensions      [1 -1 -2 0 0 0 0];

internalField   uniform 1e5;


upperWall      
    {
         type            fixedFluxPressure;
          value		 uniform 1e5;
    }

    leftWall     
    {
       type            fixedFluxPressure;
       value		 uniform 1e5;
    }

    rightWall     
    {
       type            fixedFluxPressure;
      value		 uniform 1e5;
    }

    lowerWall    
    {
         type            fixedFluxPressure;
          value		 uniform 1e5;
    }

    frontAndBack    
    {
        type            empty;
    }

I have change the p_rgh B.C on the walls to 0 Pa and pMin the same as 1e5. My geometry has Atmospheric Conditions. By using p and pMin 1e5, the material properties of the Fluids remain constant. Am i modelling some non- physicality by considering the p_rgh to 0. My fluid is static at the beginning of the simulation i.e, the corresponding B.C of U are uniform (0 0 0) for all Walls.

Thanks in Advance,

Best Regards,
Rohith