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plz help about No convergence

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Old   September 17, 2014, 05:03
Default plz help about No convergence
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Choi Jaeyoung
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I'm trying to calculate GDI engine in Star-CD but there's some problem.
I adjusted alpah value from 1.6 and to 2.1 in es-ice, to advance peak pressure crank angle.
after that,

PSDTMP : NO CONVERGENCE, NMXX= 200
Saturation temperature se to critical temperature
PSDTMP : NO CONVERGENCE, NMXX= 200
Saturation temperature se to critical temperature
PSDTMP : NO CONVERGENCE, NMXX= 200
Saturation temperature se to critical temperature
...repeat...

Is there any possible problem and solution?
i need your help and thanks for your attention
best regard,
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