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FSI- Study showing undefined value found.

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Hi All,

I'm trying to set up a FSI (fluid-structure interaction) for a turbine in a turbulent flow, so I can find the torque generated by the water on the turbine.

Once I had finally completed the mesh, I started to run the study, however I am always met with this error.

Undefined value found. - Detail: Undefined value found in the equation residual vector. There are 17541 degrees of freedom giving NaN/Inf in the vector for the variable x. at coordinates: (-0.0720228,-0.237561,1.29999), (-0.0586486,-0.232642,1.29999), (-0.0720228,-0.237561,1.3017), (-0.0675838,-0.223716,1.29999), (-0.0675839,-0.223716,1.30178), ... - Feature: Stationary Solver 1 (sol1/s1)

I've gone through similar posts, but I cannot seem to find anything to works with my issue.

Any help would be greatly appreciated!

Tom



0 Replies Last Post 26 feb 2018, 10:05 GMT-5
COMSOL Moderator

Hello Tom Mapp

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