Re: [ff3d-users] running an example: temperature.ff

[Arun Viswanathan]

Hi Stephane,

I implemented all the changes you'd suggested --
changed the mesh to a tetrahedrization (but still
can't see any meshing or any results inside the
geometry; the mesh is just better, with boxes and
diagnoals) and also replaced C0=x*y*z with C0=0. My
leakage sphere is now right in the center of the
container. My visual now shows me high concentrations
at the base of all the drums, as if the chemical is
accumulating under the drums?! I have attached the .ff
file with this mail. Please take a look at it and tell
me what is wrong this time.

Thank you. Best regards,
Arun.

--- Stephane Del Pino <address@hidden> wrote:
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> Le mercredi 23 Juin 2004 02:35, Arun Viswanathan a
> écrit :
> > Hello all,
> >
> > I am facing a problem understanding the mesh that
> I
> > obtain. So I tried running the temperature.ff
> example
> > given. First of all, there was an error when I
> tried
> > to run it: "No cell has reference that matches
> (2)!".
> > So I tried making the mesh finer but it still
> didn't
> > work. So I just commented out the boundary
> condition
> > that referred to this figure (2).
> 
> Thank you for the report, I will fix the examples
> when I have time... This 
> week-end hopefully...
> 
> > When I ran the program after making the above
> change,
> > I got a mesh showing maximum temperatures at 2
> corners
> > of the box. Now, I might be thinking wrong, but
> > shouldn't the result show me maximum
> concentrations at
> > the 1 box that is inside the bigger box, and then
> > spreading out from there??
> All parameters are quite stupid, I never tested this
> file before, I will 
> explain why it does not work at all, when I will
> fixed it.
> 
> > The concentrations that I see are only iso-lines
> (on
> > the surface of the figure). How could I view the
> > temperature lines within the geometry too?
> Medit does not manage very well meshes of hexahedra,
> so consider using OpenDx, 
> or the following command:
>       mesh T = tetrahedrize(M);
> And then save your data using the mesh T which is
> built of tetrahedra and then 
> convinient to Medit. [I know the doc should mension
> all this, but time is 
> very difficult to find :-(]
> 
> Best regards,
> Stephane.
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> 
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