[Nek5000-users] volumetric heat source w/ inflow

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

Thanks Aleks for your suggestion.
So you think it might be because of some issue with MOAB. I'll check  
this out, though, apparently, I haven't had any problem reading the  
mesh and sidesets into Nek via MOAB.

Mohsen


On 10-Jun-14, at 12:27 PM, <nek5000-users at lists.mcs.anl.gov> wrote:

> Hi Mohsen,
>
> One way I usually check my MOAB setups is by running the Nek's  
> version of it.
>
> For this one needs to get Mesh & BC by calling gen_rea(2) from say  
> userchk, add the missing parameters to create .rea file, run genmap  
> for .map file and fill q array in userq2() routine by calling the  
> latter from userq() say once per timestep
>
> 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 11:03 AM
> To: nek5000-users at lists.mcs.anl.gov
> Subject: Re: [Nek5000-users] volumetric heat source w/ inflow
>
> Hi Aleks,
> I should have mentioned in my previous email that I am actually using
> MOAB.
>
> Thanks,
> Mohsen
>
> On 10-Jun-14, at 12:01 PM, <nek5000-users at lists.mcs.anl.gov> wrote:
>
>> 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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