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DPM simulation of water evaporation in Fluent

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Old   December 7, 2012, 08:50
Default DPM simulation of water evaporation in Fluent
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Hi everyone.
when conducting the DPM simulation in FLUENT. A error message shows:
"Step size underflow in stiffbs:
dt = 1.442125e-012, t = 7.782108e-005
0 y = 6.718457e-010 dy/dt = -3.111874e+001
1 y = 3.730000e+002 dy/dt = 0.000000e+000 "
but my calculation can still go on. I dont know why this happened? And hwo to fix?
Thank you.
All the best
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