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-   -   What does mean "cells limited by chemical eigenvalue" after enabling the stiff solver (https://www.cfd-online.com/Forums/fluent/223050-what-does-mean-cells-limited-chemical-eigenvalue-after-enabling-stiff-solver.html)

Roh December 19, 2019 10:24
What does mean "cells limited by chemical eigenvalue" after enabling the stiff solver
 
Guys,
I'm trying to perform a 2D simulation of detonation using an 8-reactions chemical mechanism but the solver diverged then I enabled the stiff chemistry solver to converge the simulation but got such such warnings e.g. :


Quote:
37615 cells limited by chemical eigenvalue
corrections zeroed in 3 cells due to excessive temperature change
What do mean these warnings?

Roh December 24, 2019 03:50
No idea??????


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