[Nek5000-users] Reynolds for pipe

[nek5000-users at lists.mcs.anl.gov]

Hi ZJ,


rho = p01 = rho

mu  = p02    (or, if p02 < 0, then mu = 1/| p02 | )


and your Reynolds number will be


    Re_D = rho Ubar / (D mu)


How this translates into shear Re depends on the Reynolds

number you are running.  An approximate formula:


Re_τ = 0.123 Re_D^ 0.875


hth
Paul


________________________________
From: Nek5000-users <nek5000-users-bounces at lists.mcs.anl.gov> on behalf of nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
Sent: Thursday, October 26, 2017 7:57 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] Reynolds for pipe

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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