About The Regularized Singularity


Hello, I’m glad you visited.  Who am I?

Currently I am a Distinguished Member of Technical Staff at Sandia National Laboratories, Albuquerque working as a computational physicist.  These days I primarily serve as the Chief Scientist for the NNSA effort to put application codes on the next generation of supercomputers. It is an extremely challenging effort and takes an immense amount of coordination of code development with (applied) computer science. I used to actively develop methods for a MHD-ALE code, ALEGRA, used for a variety of applications including high energy density physics experiments.  In addition, I am an active contributor to Verification and Validation (V&V) with a focus on developing methods for conducting verification analysis, and quality frameworks.

I have been at Sandia for 6-and-a-half years.  Prior to that I was at Los Alamos National Laboratory for 18 years.   I have expertise in hydrodynamics (incompressible to shock), V&V, UQ, numerical analysis, interface tracking, turbulence modeling, nonlinear coupled physics modeling, nuclear engineering.  I plan to write something on all of these topics.
I’ve written two books and lots of papers on these, and other topics.
My most cited paper is on interface tracking, “Revisiting Volume Tracking” which has an interesting story related to the gap between why you write a paper and why a paper gets cited.  I wrote that paper with Doug Kothe.     Here is the citation:
Journal of Computational PhysicsVolume 141, Issue 2, 10 April 1998, Pages 112–152.
My two books are

 Implicit large eddy simulation: computing turbulent fluid dynamics, Published by the Cambridge University Press, Edited by Fernando Grinstein, Len Margolin and myself.  Fernando and Len are at Los Alamos.  The book is another interesting story.

 High-resolution methods for incompressible and low-speed flows, with Dimitri Drikakis and myself, Published by Springer-Verlag.

6 thoughts on “About The Regularized Singularity”

  1. Bill your blog is just great. Please continue.

    • Raphael, Thanks although one of the main objectives is just to write regularly and using a different style than the usual academic prose. I try to post something weekly.

  2. This blog is fantastic to me. Many useful ideas and inspiring things. Thank you.

  3. Greg Carter said:

    Just found your blog. Thanks for your voice and insights supporting the rational foundations for real human values. I’ll be back to visit. Hope the dolphins survive.

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