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Fluid and Structure Interaction

Posted May 18, 2010, 12:42 a.m. EDT 1 Reply

Lisa Myers
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Hi! I am getting the error code 7220 when trying to solve the attached model. The solid structure is under a load produced by the fluid as well as a load of 0.0076 N/m^2 on curve 1. The fluid is flowing due to a difference in pressure. The pressure at inlet (curve 1) is 200,000 Pa and the pressure at the two outlets (curve 5 & 9) is 0 Pa. If I highlight only u,v,x, and y on the Solver Manager, the model will solve for the solid subdomain but not the fluid subdomain. I would like to be able to solve both the solid and fluid subdomains without the error message. Please let me know what I can do to fix the model. Thank you very much!

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1 Reply Last Post May 18, 2010, 1:40 a.m. EDT
Danial Tz
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Posted: 1 decade ago May 18, 2010, 1:40 a.m. EDT
Just add lm5 lm6 lm7 to your solver sequences as well. They are the lagrange multipliers.
Just add lm5 lm6 lm7 to your solver sequences as well. They are the lagrange multipliers.

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