[Nek5000-users] constant average velocity at inlet with periodic boundary conditions

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

Paul,

I emailed you on your illinoi email. There is a link to download the files.

Thanks for looking into this.

Marco
> On Sep 6, 2016, at 12:36 PM, nek5000-users at lists.mcs.anl.gov wrote:
> 
> 
> Hi Marco,
> 
> If you want to send .rea/.usr off-list, I'll take a look...
> 
> Best,
> Paul
> 
> ________________________________________
> 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, September 06, 2016 10:40 AM
> To: nek5000-users at lists.mcs.anl.gov
> Subject: Re: [Nek5000-users] constant average velocity at inlet with    periodic        boundary conditions
> 
> Also, the heat equation is only solved in the fluid domain. I am only interested in the turbulent flow without heat equation for now.
> 
> Marco
>> On Sep 6, 2016, at 10:44 AM, nek5000-users at lists.mcs.anl.gov wrote:
>> 
>> Paul,
>> 
>> there is no heat added to the flow but I do have IFHEAT set to true in the rea file. The temperature profile does not vary though.
>> 
>> Marco
>>> On Sep 6, 2016, at 10:19 AM, nek5000-users at lists.mcs.anl.gov wrote:
>>> 
>>> Hi Marco,
>>> 
>>> Does this have conjugate heat transfer ?
>>> 
>>> Paul
>>> 
>>> ________________________________________
>>> 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, September 06, 2016 8:39 AM
>>> To: nek5000-users at lists.mcs.anl.gov
>>> Subject: [Nek5000-users] constant average velocity at inlet with periodic       boundary conditions
>>> 
>>> Dear nek users,
>>> 
>>> I am simulating the flow in a 7 pin bundle mesh with periodic boundary conditions in Nek5000 and set the parameters p054 and p055 to -3 and 1, respectively. With these settings, the average velocity should be 1 in the geometry. This is however not what I am seeing; the maximum velocity is around 0.32.
>>> 
>>> I used the same set up for a 3-D pipe and the numerical solution behaves as expected.
>>> 
>>> Does anybody has details on how the fix mass flow rate/volumetric velocity are enforced in Nek5000?
>>> 
>>> Thanks,
>>> Marco
>>> 
>>> 
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>> 
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