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[help Beginner]calculation error

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Old   May 2, 2011, 00:58
Question [help Beginner]calculation error
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Jang Mingi
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the followings are the error messages I got

global courant number is greater than 250.00
the velocity field is probably diverging.
Please check the solution and reduce the time-step if necessary.

i'm trying to solve two-phase flow inside a cylinderical tank which has
water jet inlet.

i've tried several models but i got the same message.
FLUENT cannot calculate even one iteration.

help me.
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Old   May 3, 2011, 09:56
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Hello,

you need to provide more details of your case,
steady/transient? vof? explicit? what time step?

greetings
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Old   May 4, 2011, 16:41
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I know this is obvious, but did you try reducing the time step? it will converge slower but it should be more stable.
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courant number, diverging, fluent, two-phase flow

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