CFD Online Discussion Forums - 2 Way FSI Problem

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Could you tell how you increased the core number ? Or which pop-up window you mean?

Quote:

Originally Posted by kmgraju (Post 396930)

dear friend
I am doing two way fsi. My structural model has a fixed temperature. I have to send heat to the fluid domain and receive heat from fluid to solid.
similarly, to send forces and displacements.
please clarify the way of setting in the ansys workbench which has been attached for your reference.

Thank you so much for your timely advice

Regards

Govind

dear friend
I also do the fsi with heat transfer. A fixed temperature is set in solid fields. When fsi starts, the flow fields will send forces to solid field and solid field send displacement and temperature to flow fields. Now,I meet some questions. The temperature is not sent to flow fields. Can U help me? How to set in mechanical.

Two way FSI- FSI data transfer doesn't work

Hi everybody,
I'm implementing the tutorial Two way FSI using ANSYS Fluent Part-1 in https://www.youtube.com/watch?v=DGPmyGFnzhA but I'm having some trouble during the data transfer between the fluid and solid domain, it simply doesn't work and doesn't apear any error (image attached). I already tried using a constant velocity instead of the udf function but it doesn't work. Does anyone have any idea what the problem may be?
Thanks in advance

compressible fluid flow in a fully enclosed volume

Hi All,
I'm modelling a compressible fluid flow in a fully enclosed volume using ANSYS CFX two way FSI method. The fluid is surrounded by a deformable membrane.

I want to study on the stresses produced inside the membrane thickness by external forces.

The problem is- in the first time step a pressure spike is generated by the fluid domain, when this pressure is transferred to the structure domain, it can't bear such a pressure magnitude and the solution diverges.

I know this problem should be initialized by a steady state 2 way FSI solution, but due to the constraint used in the structural part the structural solution cannot be converged in a steady state way. Therefore I initialized the problem using a transient 2 way FSI solution. I could achieve this solution using a time step size of 0.1s that is very bigger than the maximum time step size needed for my problem (0.001s).

However this initialization could not solve my problem and the same problem occurs for next time step (time= 0.101s) again.:confused:

I will be very thankful if anyone can help me to solve this problem.