I am simulating a floater of a semisubmersible wind turbine in Abaqus using the CEL method. However, the model becomes unstable after some time and the Eulerian domain kind of explodes. This happens after the Total Energy of the system becomes negative. I am running the model with double precision and hard contact in the general contact algorithm. Any idea how to fix this issue?
Ahmad Moeineddin
Hi Ali,
If you use one of the constitutive models built in Abaqus, you can try to increase the viscosity parameters or use some scale factor to reduce the time step. If you are using a VUMAT, this should be checked in more detail.
Best Regards,
Ahmad
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