fenics team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, Dec 06, 2006 at 10:50:20AM -0500, Theodore Omtzigt wrote:
> I have been studying the different algorithms for volume meshing and as far as
> I can tell, there are two essential interactions with geometry for meshing
> algorithms:
> 
>  
> 
> 1-       Is a point inside or outside the volume delineated by some surface?
> 
> 2-       Project a point onto the surface if you want to refine a mesh element,
> or move a vertex
> 
>  
> 
> Secondly, I am trying to understand the issues surrounding moving grids as they
> arise in ALE methods. So, here is the question: To do proper AMR on moving
> grids wouldn’t we need an abstract geometry interface to follow the geometry
> properly, and wouldn’t it be therefore necessary to start including a geometry
> engine of some degree that is more sophisticated than a simple cylinder object?
> 
>  
> 
> Maybe, it would also be good to introduce the background of what made me
> struggle with this: I want to build an demo where we have a flow field and an
> object in that flow field that can be interactively manipulated, all the while
> the solver is going and forces on the object and the fluid are properly
> calculated and visualized. Does the current state of FEniCS have enough of the
> pieces to build that demo?

Yes, but putting the pieces together to make that happen would be
non-trivial.

/Anders