[Paraview] Displaying strong discontinuities/XFEM

[Berk Geveci]

Hi Neil,

I am afraid that the old school solution is the only out-of-box solution. If
you are willing to spend some quality programming time with VTK, there are
folks on this and VTK lists that can help you with implementing your own
cell types. It is a non-trivial task though.

-berk

On Thu, Jul 8, 2010 at 11:07 AM, <nhodge at me.berkeley.edu> wrote:

> All:
>
> I have done a bunch of searching on google, as well as the list archives.
> The results I have found are 3-4 years old, so I thought I would ask this
> question, to see if the answer is now different . . .
>
> How does one display strong discontinuities?  By "strong", I mean
> discontinuities in the field variables themselves (as opposed to the
> gradients).  The context is that I have an XFEM method (which represents
> discontinuities along arbitrary surfaces within elements).  For 4-node
> quadrilaterals in 2D, I have 4 nodal DOFs for the continuous part of the
> solution, and 4 nodal DOFs for the discontinuous part of the solution.
> Additionally, I represent the surface of discontinuity using a signed
> distance function, which is characterized by 4 nodal DOFs.
>
> It seems like the old school solution is basically to split the elements
> which contain the discontinuity into multiple elements, the display the new
> "elements", that now have discontinuities along the inter-element
> boundaries.
>
> I was just wondering if there is now anything that is more elegant/natively
> supported.  Thanks.
>
> Cheers,
>
> Neil
>
> ======================================================================
> Neil Hodge
> Ph.D. Candidate
> Computational Solid Mechanics Lab
> Department of Mechanical Engineering
> University of California, Berkeley
>
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