[Nek5000-users] Vortex within cylinder with rotating lid AND How to import from Soldiworks to Nek5000?

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

Dipendra,

You can stretch the height of the domain with the following call in usrdat2:

      z0 = 0.0
      z1 = 5.0  ! New height
      call rescale_x(zm1,z0,z1)

...

There is also discussion of mesh morphing in the user manual.

Note that this morphing effectively lowers resolution (since the number of elements
is unchanged).  You can boost resolution by increasing N (lx1 in SIZE file).   You might
not need to do this, however.

If you really stretch a lot you probably should rebuild the geometry in z using a 2D mesh of
a disk, followed by n2to3 to extrude the 2D geometry to 3D.

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: Wednesday, July 27, 2016 10:01 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] Vortex within cylinder with rotating lid AND How to import from Soldiworks to Nek5000?


Hello all,

I have just recently started to familiarise myself using Linux and Nek5000 so my knowledge is quite limited(please bare with me). I am currently doing a summer project proposing to use Nek5000 rather than ANSYS Fluent to simulate swirling flow to investigate vortex breakdown.  I am currently going over the examples within the SVN repository I downloaded to which I stumbled upon the vortex problem within a cylinder with a rotating lid. I was interested in finding out how to change the aspect ratio of the geometry.


Additionally, I also wanted to confirm if its possible to import geometry from Solidworks into Nek5000? I have read that you can do it through Gambit but I am looking for some guide on how to do so.


Kind Regards

Dipendra
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