|December 31, 2013, 09:02||
3 layered vessel FSI(2 way)
Join Date: Oct 2012
Posts: 41Rep Power: 4
I am trying to run a transient 2 way FSI simulation of an aortic vessel, which has three layers and each layer has different module of elasticity.
but after 1 time step solution crashes.
it's massage is negative volume and folded mesh
when i change the module of elasticity there is no problem
i want to know is there any way to solve this problem?
each layer has been assumed linear elastic ;E=4 MPa v=0.45
thanks for any help
|January 1, 2014, 05:19||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,823Rep Power: 85
You are probably getting excessive mesh motion leading to folding mesh. Do a simulation where you output a result file at every time step leading up to the crash (including the mesh) and look at it in the CFD-Post. Then you should be able to know what the source of the problem is.
|January 2, 2014, 15:46||
Join Date: Apr 2009
Posts: 516Rep Power: 12
If you can get on the ANSYS Customer Portal search for "2022119". This is a Solution # titled "How do you Stabilize strongly coupled 2-way FSI simulations between FLUENT or CFX and Mechanical?"
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