CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   Euler equation (http://www.cfd-online.com/Forums/cfx/22697-euler-equation.html)

 petr June 12, 2006 09:20

Euler equation

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.

 CFD Man June 12, 2006 09:39

Re: Euler equation

Set the flow to laminar and the viscosity to a very small number.

 petr June 12, 2006 09:55

Re: Euler equation

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.

 Joe June 12, 2006 10:23

Re: Euler equation

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.

 petr June 12, 2006 10:25

Re: Euler equation

Thank You Joe and CFD Man.

 junc October 16, 2012 11:57

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?