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July 29, 2005, 06:41 |
multiphase flow-floating error
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#1 |
Guest
Posts: n/a
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hi, i work on fluidized bed simulation,following error have been occured during the solution:
""Error: Floating point error: overflow"" what should i do?when this error occurs? and following sentences: ""turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 1745 cells turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 1538 cells"" what should i do for that?is it a problem? regards |
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July 29, 2005, 09:26 |
Re: multiphase flow-floating error
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#2 |
Guest
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hi masood,
in the panel solve-controls- limits set turbuelnt viscocity more than 10^5. for over flow problem u set pressure out let( bondary condition) to atmosphereic condition this may help u. |
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July 30, 2005, 07:23 |
Re: multiphase flow-floating error
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#3 |
Guest
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Dear Hariharanath! i use pressure outlet with atmospheric condition but atill have this problem(overflow).it was steady state simulation ,now i turn on unsteady state and that problem dont exixst now! and is it true to change turbulent viscosity ratio limit?howmuch is real? regards
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July 31, 2005, 07:17 |
Re: multiphase flow-floating error
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#4 |
Guest
Posts: n/a
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Hi Masood,
you were right in switching to unsteady state. unsteady solution is better suited for highly non-linear problems. i would say that you should not change variable limits. they are set to optimum values and better left untouched. Swarup. |
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