[Nek5000-users] USERVP

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

Hi Muhsin,

For variable transport properties case (IFUSERVP=T), utrans and udiff are the transport and diffusion coefficients, respectively, in a particular advection-diffusion equation.   Namely, when solving for momentum (ifield=1), they are density and dynamic viscosity, while are thermal conductivity per volume and thermal conductivity while solving for temperature (ifield=2).

Note for the constant properties case, they are taken from .rea file as RHO, VISC, RHOCP and CONDUCT parameters.

Aleks

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From: nek5000-users-bounces at lists.mcs.anl.gov [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, December 11, 2014 6:37 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] USERVP

Hi all,

I am quite new in Nek5000 and I still trying to develop the understanding to use this program. May i know what are udiff and utrans stands for in uservp subroutine in .usr file? I aware that both will be using to control the variable properties. But which parameter are those control in the equation? Thanks


Muhsin
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