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Fluid structure interaction help
Posted Jun 18, 2010, 12:35 p.m. EDT 3 Replies
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hello,
I still trying to model basic fluid structure interaction and keep getting different errors. I modeled an port from which fluid is coming out with a certain velocity. This fluid is coming in contact with another structure. I can't figure out why I keep getting the errors.
Thank you very much.
Error: 6169
Failed to evaluate operator
- Operator: mean
- Geometry: 1
- Dimension: 2
- Domains: {1,2,4,9,12}
Failed to evaluate variable
- Variable: FX_smsld
- Defined as: (((-lm7)*dvol_ale)/dvol)
Failed to evaluate variable
- Variable: FXg_smsld
- Defined as: FX_smsld
Failed to evaluate expression
- Expression: diff(((FXg_smsld*u_test-0)*dvol),u_test)
I still trying to model basic fluid structure interaction and keep getting different errors. I modeled an port from which fluid is coming out with a certain velocity. This fluid is coming in contact with another structure. I can't figure out why I keep getting the errors.
Thank you very much.
Error: 6169
Failed to evaluate operator
- Operator: mean
- Geometry: 1
- Dimension: 2
- Domains: {1,2,4,9,12}
Failed to evaluate variable
- Variable: FX_smsld
- Defined as: (((-lm7)*dvol_ale)/dvol)
Failed to evaluate variable
- Variable: FXg_smsld
- Defined as: FX_smsld
Failed to evaluate expression
- Expression: diff(((FXg_smsld*u_test-0)*dvol),u_test)
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3 Replies Last Post Jun 21, 2010, 10:39 a.m. EDT
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Posted:
1 decade ago
I don't quite get what you're trying to do, but, you should know that comsol can not handle FSI cases in which you have a change in geometry (domains passing each other). So, usually fluid already encapsulates the structure and the fluid domain is a moving mesh (ALE).
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Posted:
1 decade ago
halo Danial
do u have any ideas about damping waves using a viscous layer in comsol i have read about that fro RICCI but i didnt get how :(....
I need to absorbe water waves on one side from my model
thanks alot
do u have any ideas about damping waves using a viscous layer in comsol i have read about that fro RICCI but i didnt get how :(....
I need to absorbe water waves on one side from my model
thanks alot
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Posted:
1 decade ago
Thank you Danial, that explains it. What I am trying to model is fluid coming out from a channel and then it comes in contact with a another structure, that is not in that fluid yet. For example water coming out of a hose and hitting a wall. Would you have any idea how I could model that in Comsol, without using the fluid-structure interaction module.
Again thank you very much!
Marina
Again thank you very much!
Marina