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Old   June 12, 2006, 09:20
Default Euler equation
  #1
petr
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Hello,

i would like to know whether it is possible to solve fluid flow problem with the help of Euler equation model (non-viscous fluid)in CFX.

Thank You, Petr.

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Old   June 12, 2006, 09:39
Default Re: Euler equation
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CFD Man
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Set the flow to laminar and the viscosity to a very small number.
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Old   June 12, 2006, 09:55
Default Re: Euler equation
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petr
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Thank You.

One more question. Is it easy to prescribe viscosity ? Sorry for this question, but at recent time i am not able to check it (once more again sorry).

Petr.

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Old   June 12, 2006, 10:23
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Joe
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Yes. Create a new material in the material editor and set the transport properties as needed.

For a pseudo-Euler analysis dont set the viscosity to exactly 0, just a suitably small value.
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Old   June 12, 2006, 10:25
Default Re: Euler equation
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petr
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Thank You Joe and CFD Man.
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Old   October 16, 2012, 11:57
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su yunde
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hello!
i am conducting a simulation through euler equation in cfx and meet some questions.
i set a very low Dynamic Viscosity value, the 'laminar' turbulence model option .besides, i also set the 'Free Slip Wall' option at all walls. however, i get the following message in cfx solver:
+--------------------------------------------------------------------+
| ERROR #002100004 has occurred in subroutine Out_Scales_Flu. |
| Message: |
| The Reynolds number is outside of the range expected based on the |
| Option selected for the TURBULENCE MODEL. Check this setting, |
| the values of the properties, mesh scale, consistency of units |
| and solution values in the input file. Execution will proceed. |
+--------------------------------------------------------------------+
does this message effects the result?
thank you for your reply!
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Old   October 16, 2012, 18:26
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Glenn Horrocks
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It is just a warning. You can ignore it - but make sure you know that the flow is in fact laminar.
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Old   October 17, 2012, 00:19
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su yunde
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thank you, ghorrocks!
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