Pressure Field using Inlet/Outlet
Hello!
Using inlet/outlet, I observe an extremely nice velocity field, but the pressure field is extremely subpar, with extreme fluctuations - which of course leads to distrust in calculated forces.
Any immediate suggestions for rectifying this?
Kind regards
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Comments
@rvacondio and @taffo can help here
Thank you for tagging them Alex!
I can inform that, following the Inlet/Outlet pdf guide, and using the options for more exact calculations, help slightly (or perhaps not at all).
Most important; enable DensityDDT3 and use mDBC, DBC will dissappoint you. Which the guide also states, which was really nice. It helped me a lot!
My experience; with a complex model you CANNOT stabilize pressure field, if you are doing 3D case and have an object penetrating the water. This is due to the wrong density/pressure initialization done by DualSPHysics when an object is drawn, i.e. a gencase issue.
To circumvent this, make your geometry outside of water, and then move it down after a while in the simulation.
Doing all of this, I got what looks like an acceptable pressure field, but need to do further digging.
I would love to be proven wrong 😊
Kind regards