[Nek5000-users] Linearised Navier Stokes

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

Hi Adam,

Thanks for the clarification. Can you please send me a sample .par file for
the baseflow for the case of "dfh_cav". Also is it possible to get the
equations solved for this problem(dfh_cav). I would like to know the way
that this has been made dimensionless.

For your kind information I briefly describe my case which I have been used
to solve with the regular non-linear framework using older versions (.rea
files). My setup is as follows:
Geometry is a 3D cylindrical annullus.
Temperature are fixed at inner and outer cylinders.
Gravity is acting in -z direction
There is a back ground rotation which is constant.

Please let me know if any other info is required. Thanks for the help.

Swarandeep




On Thu, Aug 17, 2017 at 1:48 PM, <nek5000-users at lists.mcs.anl.gov> wrote:

> Hi Swarandeep,
>
> Yes. You generate ###.rea in the standard way. In the old version it was
> txt and contained both mesh information and runtime parameter. One could
> split mesh information (###.re2, binary file) and runtime parameters
> (###.rea with negative number of elements or currently ###.par) using
> reatore2 tool. The map file is generated with genmap (can be txt or
> binary). So the procedure is more or less the same. If you have ###.rea
> with mesh you split it and generate ###.re2. Next you generate ###.map with
> genmap and finally ###.par by hand. Be careful to use tolls from the same
> release, as they've been changed significantly (e.g. binary ###.map file).
> Regards
> Adam
>
>
> On 16/08/17 18:52, nek5000-users at lists.mcs.anl.gov wrote:
>
> Hi Adam,
>
>          Thank you very much for the help.
>
>          Does the ###.map, ###.box file  and from them the ###.rea file
> (in the dfh_cav case: the ###.re2 files)  are created as done for the
> earlier versions i.e., by using genbox and genmap. Please clarify.
>
> Swarandeep
>
>
>
> On Wed, Aug 16, 2017 at 5:35 PM, <nek5000-users at lists.mcs.anl.gov> wrote:
>
>> Hi,
>>
>> The simplest way would be to look into existing example under
>> Nek5000/short_test/dfh_cav/
>> It is a differentially heated cavity case and covers both direct and
>> adjoint linear solver. It is compatible with the current git version and
>> uses ###.par file instead of ###.rea.
>> Regards
>> Adam
>>
>>
>>
>>
>>
>> On 11/08/17 11:05, nek5000-users at lists.mcs.anl.gov wrote:
>>
>>> This information might be outdated (old version) but previously the base
>>> flow was read in using the restart option in the rea file. The disturbance
>>> you can read in yourself in userchk.
>>>
>>> Philipp
>>>
>>> On 2017-08-11 10:49, nek5000-users at lists.mcs.anl.gov wrote:
>>>
>>>> Hi Philipp,
>>>>
>>>>       That was very much helpful. I have a steady base flow and
>>>> temperature state. Please let me know where to provide the base flow.
>>>>
>>>>
>>>> Thank you
>>>> Swarandeep
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