Co simulation in starccm with Abaqus

Ashokk · April 11, 2019, 07:25

Hi. I am trying to solve FSI problem in starccm for a rotating body with abaqus. The MRF is used to obtain the pressure load form CFD and it is fed to the FEA. In view of that morphing is used. But i am not able to do the simulation because in get negative volumes due to body rotation. In MRF method the body should not rotate. Kindly help me out form this

steve lee · April 11, 2019, 21:29

In MRF method, Body is not moving.
Just add some forces in calculation like some parts are really rotating.
So, I think MRF is the useful solution for your problem.

If you should show the rotation part is really moving.
you can choose 2 ways to solve that.

Morphing and Overset.

If you choose overset, you should make many cells for interface boundary to capture rotating body but you don't need 'remeshing'

If you use morphing for that. you should remesh many times for cell quality..

I don't recommand morphing

Ashokk · May 12, 2019, 07:34

My problem is not about the body. The body should be stationary similar to a propeller tutorial in starccm+. this should ideally give the body pressures and the same shall be transferred to the fea module. my problem lies with morphing which inducing rotation.

April 11, 2019, 07:25	Co simulation in starccm with Abaqus	#1
Ashokk New Member Join Date: Apr 2019 Posts: 2 Rep Power: 0	Hi. I am trying to solve FSI problem in starccm for a rotating body with abaqus. The MRF is used to obtain the pressure load form CFD and it is fed to the FEA. In view of that morphing is used. But i am not able to do the simulation because in get negative volumes due to body rotation. In MRF method the body should not rotate. Kindly help me out form this

April 11, 2019, 21:29		#2
steve lee Member Steve Join Date: Mar 2018 Location: South Korea Posts: 69 Rep Power: 8	In MRF method, Body is not moving. Just add some forces in calculation like some parts are really rotating. So, I think MRF is the useful solution for your problem. If you should show the rotation part is really moving. you can choose 2 ways to solve that. Morphing and Overset. If you choose overset, you should make many cells for interface boundary to capture rotating body but you don't need 'remeshing' If you use morphing for that. you should remesh many times for cell quality.. I don't recommand morphing Last edited by steve lee; April 16, 2019 at 01:03.

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May 12, 2019, 07:34		#3
Ashokk New Member Join Date: Apr 2019 Posts: 2 Rep Power: 0	My problem is not about the body. The body should be stationary similar to a propeller tutorial in starccm+. this should ideally give the body pressures and the same shall be transferred to the fea module. my problem lies with morphing which inducing rotation.