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-   -   Convergence on unstable steady states (http://www.cfd-online.com/Forums/fluent/79439-convergence-unstable-steady-states.html)

ekor August 24, 2010 05:50

Convergence on unstable steady states
 
I am currently modeling a CVD reactor system which is known to exhibit multiple steady states for the same parameter values. Specifically, its solution space for a range of inlet flow Reynolds numbers contains 2 branches of stable steady states and a branch of unstable steady states.

I can "walk" on the two stable branches (with first order continuation) but has anyone been able to converge with FLUENT on the unstable branch???

This type on stability analysis is straightforward with hand-made codes (using arc-length continuation) but does anyone know how it is done with FLUENT????

Thanks in advance!


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