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Boundary codition of pointDisplacement at the immersed boundary?? |
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#1 |
New Member
Chaewoong Ban
Join Date: Jun 2013
Posts: 18
Rep Power: 13 ![]() |
Hello.
I'm now struggling to find the adequate boundary conditon for the pointDisplacment at the immersed boundary. pointDisplacement is pointVectorField, and I guess there is no proper BC for pointVectorField in the implemented IB method (foam-extend 4.1). In that case, I may have to implement some BC for pointVectorField..? Could you give me any comments or hints for this? Many thanks. |
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#2 |
Senior Member
Join Date: Dec 2019
Location: Cologne, Germany
Posts: 365
Rep Power: 8 ![]() |
is there a typo in zeroGradientIB?
i mean, did you mean just zeroGradient? |
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#3 | |
New Member
Chaewoong Ban
Join Date: Jun 2013
Posts: 18
Rep Power: 13 ![]() |
Quote:
When I use zeroGradientIB, the result is the same as above. As you can see in the picture (right), FOAM recommended 24 patchField type, which have nothing to do with IB. When I use zeroGradient, then simulation move next step. However, another error occur (below). I think it is related with that the zeroGradient BC is not proper for the IB. ---------------------------------------------------------------------------------------------------------------------- --> FOAM FATAL ERROR: Not implemented From function immersedBoundary::gradientInternalCoeffs() in file lnInclude/fvPatchField.H at line 473. FOAM aborting Aborted (core dumped) ---------------------------------------------------------------------------------------------------------------------- |
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#4 |
New Member
Chaewoong Ban
Join Date: Jun 2013
Posts: 18
Rep Power: 13 ![]() |
I use motionU instead of pointDisplacement for the dynamic mesh motion.
In addition, I made(link?) a boundary condition of tetPointVectorField for the immersedBoundary. eddited class /foam /tetFiniteElement |
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