Discussion ClosedThis discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one,click here.
Seriously sick pre-conditioner.
Posted 2023年12月23日 GMT+1 09:15Computational Fluid Dynamics (CFD), Optimization, Studies & SolversVersion 6.21 Reply
Please login with a confirmed email address before reporting spam
While performing 3D fluid topology optimization, an error occurred: "Solution not found. At velocity u, pressure p. Severe pathological preconditioner. The returned solution does not converge. Not all parameter steps were returned." How should this error's be solved? What does the severe pathological preconditioner stand for?
Please login with a confirmed email address before reporting spam
Hi
Does the problem happen immediately for the first iteration? It could be that you are using a Fully Coupled solver, when a Segregated approach would be better.
Best regards
Kristian. E. Jensen
Technical Product Manager, Optimization