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Fluid structure interaction with Turbulence k omega model
Posted 1 mai 2013, 03:51 UTC−4 Version 5.2 1 Reply
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I want to study he effect of blood(fluid )on arteries wall layers(structure ). so i have been trying to model it with FSI and turbulence K omega.
There is in inlet velocity waveform that is developed turbulent waveform having equation 1.22*Um(t)*((1-((2*r)/d))^(1/7)) and I have defined Um(t) as interpolation function.
But when i run the simulation it gives an error "Attempt to evaluate negative power of zero Function: ^
Failed to evaluate temporary symbolic derivative variable. Variable: Uz@VDN$r".
I have tried to change solvers and adding terms like eps (which got known in comsol community ) but it does not works.
Firstly i solved it by using turbulent flow and structural mechanics separately and imported parameters of flow in structure module. this equation worked in this, but FSI module is not working with it ..??
Suggestions needed!!!!!!!!! I have attached COMSOL file
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Hello Ali
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