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-   -   Migal with Chemkin (http://www.cfd-online.com/Forums/phoenics/52082-migal-chemkin.html)

PattiMichelle July 14, 2006 15:47

Migal with Chemkin
 
As a result of some problems I had with 3.6, I tried rerunning my CHEMKIN combustion models in 3.4 but with migal turned on for the hydrodynamic terms. It slows down calculations by about a factor of three, but the velocities and pressures converge faster by about a factor of 10 - 20. The net result is a more completely converged solution at the end of a run because the CHEMKIN point-by-point solver causes the chemical source terms to dominate the flow variables, but MIGAL ameliorates this by dramatically increasing the efficiency of the flow-term convergence. The result is that very few sweeps of the SIMPLEST solver are required to completely converge the solution.


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