[Nek5000-users] Reynolds for pipe

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Thu Oct 26 11:09:39 CDT 2017


Hi,

Re_tau=360 corresponds approximately to Re_D=11700, that means that your 
diameter should be 1 (i.e. the radius 0.5), and the bulk speed should be 
1. This is achieved by:

- setting p02 to -11700
- having a pipe radius of 0.5
- setting p54 to the (negative) direction of the pressure gradient 
(-1=x, -2=y, -3=z)
- setting p55 to 1

Best regards,
Philipp and Jacopo

On 2017-10-26 14:57, nek5000-users at lists.mcs.anl.gov wrote:
> Hi,
> 
> May I know for shear Reynolds number (Re_t) equals to 361, whether 
> setting p02 VISCOS in rea file to be -11700 and the pipe radius equals 
> to 1 in the mesh part is correct.
> 
> Kind regards,
> 
> ZJ
> 
> 
> 
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