Hello, I am now using calculix-openfoam for fluid structure coupling simulation. In ANSYS software, it can not work normally due to excessive deformation. But the deformation in precice is so small. I guess it’s my material definition, but I don’t know how to modify it. The length unit is m
fluid-openfoam.zip (2.3 MB)
precice-Calculix-watchpoint-Flap-Tip.log (192.2 KB)
this is the inp file
tube.inp (411 Bytes)
Hi @huchunjiao 
You can change the solid material in the inp file:
*MATERIAL, Name=EL
*ELASTIC
2.3E+11, 0.2
*DENSITY
1400
It is indeed pretty stiff.
Benjamin
I’m glad to receive your reply. My grid unit is in meter. My material density is 1420 kg/m3 and my Young’s modulus is 2.3E+11pa. How should I input it in the inp file? I’m not clear about the material unit in the inp file. Please help me
Then, this looks correct.
I guess you also double-checked the fluid parameters?
My model moves in the sea water. The sea water density is 1020kg / m3 and the model sailing speed is 0.5m/s. This is my parameter setting. What else do I need to change
parameter.zip (823 Bytes)
The turbulence parameters in the boundary conditions are calculated according to this website（ CFD Online - Turbulence Properties, Conversions & Boundary Estimations (cfd-online.com)）
0.zip (2.6 KB)