[Getfem-users] regarding the valude of the level set function

[Andriy Andreykiv]

Dear Yves,

        When I create a new level set on a getfem_mesh, I have to also set 
values of 
the level set function by setting 

ls.values( )[i] = ..  
        
for all the nodes of my original mesh, that I want to cut by the level set. 
I browsed through the examples, located in getfem instalation, and I see that 
all of them have quite simple procedure of doing this. Namelly, in every 
example this procedure strongly depends on the geometry of the problem and I 
didn't see some generic way of doing this. This is particularly a problem if 
your level set (geometry of your interface) is quite arbitrary, as in my 
case.
Is there a way to set those values in some generic way? 
By, say, computing a signed distance between your interface (possibly defined 
as a getfem::mesh itself) and the nodes where you have to define the value of 
your level set?

Thank you in advance,
                                Andriy



On Tuesday 20 March 2007 13:51, you wrote:
> Le Mardi 20 Mars 2007 10:02, vous avez écrit :
> > Dear Yves,
> >
> >     I have finaly managed to implement the application or Dirichlet boundary
> > conditions in a weak sence. What you've suggested below works fine.
> >
> > Thank you very much.
> >
> >     In the attachment you can see an example picture of a problem where
> > Dirichlet BC's weere applied along the cirle mesh (made of segments).
>
> Nice result !

-- 
__________________________________________
Andriy Andreykiv
Delft University of Technology
Faculty of Mechanical Engineering 
Fundamentals of Microsystems
Mekelweg 2
2628 CD  Delft
The Netherlands

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