[Nek5000-users] volumetric heat source w/ inflow

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

Hi Mohsen,

userq2 is used only with MOAB -- use qvol in userq instead -- see, e.g. examples/conj_ht/conj_ht.usr but without condition on nelgv

Best.
Aleks


________________________________________
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: Tuesday, June 10, 2014 10:16 AM
To: Nek 5000
Subject: [Nek5000-users] volumetric heat source w/ inflow

Hello all,
I am working on a problem consisting of an axially-horizontal
cylindrical tank with an inlet (an opening) at its top and a
connected pipe to its bottom as an outlet. The boundary conditions
are set accordingly, i.e., inflow and outflow, respectively. There is
no problem with isothermal simulation of such configuration. However,
when volumetric heat source is added to the fluid domain (via userq2
subroutine), non-physical temperatures have been observed at the
walls (w/ adiabatic BC) in the immediate vicinity of the inflow (w/
Dirichlet temperature BC). In fact, the element nodes close to the
inlet have very high or very low temperatures, which are no expected.

I am wondering if anyone has any experience/hint on this issue.

Thanks,
Mohsen



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