[sumon]

Dear all,
Greetings !
I am trying to plot a scene of Hydrodynamic Pressure for a simulation. I have defined the field function as , $Pressure - $Density * 9.81 * $$Centroid[2]. But this doesn't match with the experimental plotting.

I am not sure that whether it is the proper way to plot Hydrodynamic Pressure or not. or is there any other way?

Can anyone please help me to sort out my confusion?

Regards.

[cwl]

$Pressure - $Density * 9.81 * $$Centroid[2]

When gravity is on - $Pressure in Star-CCM+ is actually piezometric pressure in which the second term is already considered and thus there is no need to subtract it explicitly.

Depending on what you mean by "hydrodynamic pressure" - you might try to plot Static Pressure, that might be what you're looking for.

[ashokac7]

I think you could just subtract Static pressure from total pressure to get dynamic pressure. Let me know if this matches to the experimental values.

[sumon]

Originally Posted by ashokac7

I think you could just subtract Static pressure from total pressure to get dynamic pressure. Let me know if this matches to the experimental values.

I have found the dynamic pressure subtracting static pressure from total pressure, I think it is pretty nice compared to experiment.

Thanks for your reply !

[ANAGHA S]

I had made a simulation for a rotating body in regular waves. During the initial stage of run, pressure contour (using $pressure function) was showing the effects of waves and as the rotation progressed and simulation started to converge, the waves were not visible. In the end of the simulation run, I got just circular contours around the body without any impact of waves.
Could someone explain me this kind of behaviour of pressure contours?