Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Fluid structure interaction with Turbulence k omega model
Posted 1 mag 2013, 03:51 GMT-4 Version 5.2 1 Reply
Please login with a confirmed email address before reporting spam
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
Attachments:
Hello Ali
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.
Please login with a confirmed email address before reporting spam