Hello everybody
I‘m using the topology optimization module to optimize a time-dependent phase change problem.
After the first optimization step, these errors appear many times:
Warning: Forward solution failed, requesting reduced step.
Warning: Adjoint solution failed: requesting reduced step.
can anybody help me, how can I solve this problem?
thank a lot！
Hamed Keramati
According to the warning, you need to reduce the time-step of your time dependent solution.
Keep in mind that the solution time-step can different from the steps COMSOL record the solution.
I hope this helps
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Muhammad Mahabat Khan
I think your optimization model may be ill-posed. Following link can be useful in this regard
https://www.comsol.com/forum/thread/28293/setting-up-simple-optimization-problem
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