Hi,

I suppose this would be fine, because the solver only uses the value of Kinvis.
In some examples we also define Re as a parameter, but this is just as a convenient way of calculating Kinvis.

Also, note that the incompressible solver assumes rho=1, since this does not affect the computations.
If you need to consider a different density, this can be achieved by scaling the pressure and forces by rho in a post-processing stage (in case you want your results in dimensional form).

Cheers,
Douglas

Em qui, 13 de dez de 2018 às 12:11, Moto Light <redamansyhh@gmail.com> escreveu:
Hi All,
I need to use two different Reynolds in the same case as two velocity inputs, my case is incompressible case, if I defined rho and Kinematic viscosity and change inlet speeds is it ok like OpenFoam and does not define Re like this:


 <!--   <P> Re            = 150                 </P>   -->        <!-- commented -->
          <P> rhoInf        = 1.2041           </P>                <!-- air density at 20 c -->
          <P> Kinvis        = 0.000015111  </P> 

--------
 <REGION REF="0">        <!-- Inlet_upper  -->
        <D VAR="u" VALUE="0.00226665" />                   <!-- Re 150 R  -->
        <D VAR="v" VALUE="0" />
        <N VAR="p" USERDEFINEDTYPE="H" VALUE="0"/>  
      </REGION>

      <REGION REF="1">        <!-- Inlet_lower  -->
        <D VAR="u" VALUE="0.000846216" />                  <!-- Re 56 R  -->
        <D VAR="v" VALUE="0" />
        <N VAR="p" USERDEFINEDTYPE="H" VALUE="0"/>  
      </REGION>
-----------------------

and calculate real two velocities and put it in the inlet speeds, is this ok
Regards,
_______________________________________________
Nektar-users mailing list
Nektar-users@imperial.ac.uk
https://mailman.ic.ac.uk/mailman/listinfo/nektar-users