about simulation of Pulverised coal combustion

kris

for coal simulation, peak temperature is suddenly going up very high and concurrently residuals for mass, enthalpy is also negative value to positive value(~10^1 or 10^2 order) very iteration. after 100 or 500 iteration, my simulation is unstable or diverging

as long as i know, source term value of energy equation for Eulerian frame is high by cause of coal combustion model...

I can't solve this problem even though I set limitation of max. temperature as 3000K

Anyway, how can I solve this problem?

next values is diverged values

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PEAK FLAME TEMPERATURES IS 2727.00000000000 IN CELL 1983

UMOM VMOM WMOM MASS T EN DISS ENTH

2.05E+01 6.20E+01 3.02E+01 2.54E+00 5.17E-01 8.26E-01 NaN

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* THERE ARE WARNINGS IN FILE star.info

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*** SOLUTION DIVERGES/UNSTABLE.

*** CALCULATIONS TERMINATED; NEW FILE.div WRITTEN

STAR-CD Version 3.20.000 Computational Dynamics, Ltd. END OF EXECUTION - STAR CPU TIME IS 1162.38 ELAPSED TIME IS 1214.95 MEMORY (DYNAMIC) USED IS 56 MBYTES