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Fluid Structure Interaction -- Not solving for deformation

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Hello,

I'm having an issue with the fluid structure-interaction model in the structural mechanics module using COMSOL 4.0. My system is similar to the "ALE Fluid-Structure Interaction" and "Obstacle in a Fluid Channel" tutorials, which I was able run successfully in COMSOL 4.0.

When I set up a new model with a different geometry but the same solver settings, the system appears to solve only the fluid flow problem without calculating the deformation of the object in the channel. (i.e. I get a pressure and velocity distribution of the fluid with no deflection of the beam in the fluid.)

I have went over the solver and fsi settings several times, and I can not find any difference between the working and not-working models. Any suggestions on things to try?

Thanks,
John Larson


Tutorials:
www.comsol.com/showroom/documentation/model/361/
www.comsol.com/showroom/gallery/987/

4 Replies Last Post Jun 27, 2010, 9:06 a.m. EDT

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Posted: 1 decade ago Jun 14, 2010, 5:20 p.m. EDT
Hi John,

Change the frame to Spatial both in the "solution" and also in the each plots' root.
Hi John, Change the frame to Spatial both in the "solution" and also in the each plots' root.

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Posted: 1 decade ago Jun 15, 2010, 4:58 p.m. EDT
Thanks, that worked.

Thanks, that worked.

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Posted: 1 decade ago Jun 27, 2010, 7:26 a.m. EDT
hi
I want to model blood flow in a carotid artery.I wonder how to model FSI for that.whould u please help me!?
I would be very thankful..
maral
hi I want to model blood flow in a carotid artery.I wonder how to model FSI for that.whould u please help me!? I would be very thankful.. maral

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Posted: 1 decade ago Jun 27, 2010, 9:06 a.m. EDT

hi
I want to model blood flow in a carotid artery.I wonder how to model FSI for that.whould u please help me!?
I would be very thankful..
maral


Salam Maral,

Please make a new post and we can discuss there.

[QUOTE] hi I want to model blood flow in a carotid artery.I wonder how to model FSI for that.whould u please help me!? I would be very thankful.. maral [/QUOTE] Salam Maral, Please make a new post and we can discuss there.

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