[Nek5000-users] Marangoni flow
nek5000-users at lists.mcs.anl.gov
nek5000-users at lists.mcs.anl.gov
Thu Jul 15 19:07:23 CDT 2010
On Thu, 2010-07-15 at 18:47 -0500, nek5000-users at lists.mcs.anl.gov
wrote:
> Hi Frank,
>
> Does the chaotic behavior go away when you raise N ?
Hi Paul,
I have used N=6 and N=8 with that grid, with little difference in the
results. There are more elements (120) in the xy plane than for the m=4
(48 elements in xy) mesh
http://www.cct.lsu.edu/~fmuldoo/temp/m-4.png
or for the m=5 (60 elements in xy) mesh
http://www.cct.lsu.edu/~fmuldoo/temp/m-5.png
Cheers,
Frank
>
> Paul
>
> On Thu, 15 Jul 2010, nek5000-users at lists.mcs.anl.gov wrote:
>
> > Hello all,
>
> At present we are working on understanding some rotating/traveling waves
> that occur in a cylindrical geometry. In particular, the effect of the
> grid on the solution is of interest. The results from the following
> grid in the xy plane, (it is simply extruded in the z direction) exhibit
> a somewhat unexpected (chaotic) behavior. Would welcome any and all
> comments concerning the quality of this mesh.
>
> http://www.cct.lsu.edu/~fmuldoo/temp/m-3.png
>
> P.S. The reason for looking at a mesh with m=3 symmetry is due to the
> existence of either m=3 and m=4 rotating/traveling waves; meshes with
> m=3 and m=5 symmetry have also been looked at and give identical (non
> chaotic) results.
>
> Cheers,
> Frank
>
>
>
>
> --
> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
> Technische Universität Wien (Vienna Technical University)
> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
> Mechanics and Heat Transfer)
> Resselgasse 3
> 1040 Wien
> Tel: +4315880132232
> Fax: +4315880132299
> Cell:+436765203470
> fmuldoo (skype)
> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
>
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--
Frank Herbert Muldoon, Ph.D. Mechanical Engineering
Technische Universität Wien (Vienna Technical University)
Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
Mechanics and Heat Transfer)
Resselgasse 3
1040 Wien
Tel: +4315880132232
Fax: +4315880132299
Cell:+436765203470
fmuldoo (skype)
http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
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