one way fluid structure interaction

Barry · February 9, 2020, 11:42

Hi,

I would like to solve a one way fluid solid interaction problem using openfoam.
From my fluid simulations, I saved wall shear stress for every cell on solid and for every time step. The solid solver is modified such that the boundary condition for traction, T (defined as sigma.n) reads wall shear stress from fluid solver at every time step. The resulting displacements are very large (1E8) but expected movement is a few centimetres displacement. What is fundamentally going wrong if any or is there any issue with solid solver in Openfoam 18.12?

HPE · February 9, 2020, 12:59

Might help? : https://www.precice.org/

Barry · February 9, 2020, 23:38

Thanks for the info.
Precice might help.
But I want to understand what could be going wrong within openfoam solid solver.
Any clue?

February 9, 2020, 11:42	one way fluid structure interaction	#1
Barry New Member Join Date: May 2010 Posts: 18 Rep Power: 17	Hi, I would like to solve a one way fluid solid interaction problem using openfoam. From my fluid simulations, I saved wall shear stress for every cell on solid and for every time step. The solid solver is modified such that the boundary condition for traction, T (defined as sigma.n) reads wall shear stress from fluid solver at every time step. The resulting displacements are very large (1E8) but expected movement is a few centimetres displacement. What is fundamentally going wrong if any or is there any issue with solid solver in Openfoam 18.12?

February 9, 2020, 12:59		#2
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 931 Rep Power: 14	Might help? : https://www.precice.org/ __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

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February 9, 2020, 23:38		#3
Barry New Member Join Date: May 2010 Posts: 18 Rep Power: 17	Thanks for the info. Precice might help. But I want to understand what could be going wrong within openfoam solid solver. Any clue?