Center for Computing Research (CCR)

Center for Computing Research

William J. Rider

William J. Rider
Computational Science
Email: wjrider@sandia.gov
Phone: 505/844-1572
Fax: 505/284-5451

Mailing address:
Sandia National Laboratories
P.O. Box 5800, MS 1323
Albuquerque, NM
87185-1320

 Currently I am a Distinguished Member of Technical Staff at Sandia National Laboratories, Albuquerque working as a computational physicist.  I 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 8 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

Education/Background

Education

Ph.D. Nuclear Engineering, University of New Mexico, May 1992, Thesis title, “The Design of High Resolution Schemes for Hyperbolic Conservation Laws”. 

M. S. Nuclear Engineering, University of New Mexico, August 1989, Thesis title, “Parametric and Transient Analyses of the SP-100 System”.

B. S. Nuclear Engineering, University of New Mexico, May 1987.

 W. J. Rider, J. A. Greenough, and J. R. Kamm, “Accurate Monotonicity- and Extrema-Preserving Methods through Adaptive Nonlinear Hybridizations,” Journal of Computational Physics, Volume 225(2), pp. 1827-1848, 2007.

J. W. Banks, T. Aslam, W. Rider, On sub-linear convergence for linearly degenerate waves in capturing schemes, Journal of Computational Physics, Volume 227(14), pp. 6985-7002. 2008.

 L. G. Margolin, W. J. Rider, and F. Grinstein, “Modeling Turbulent Flow with Implicit LES,” Journal of Turbulence 2007.

L.G. Margolin and W.J. Rider, “The design and construction of implicit subgrid scale models,”International Journal for Numerical Methods in Fluids, Volume 47, 2004.

W. J. Rider “Wall Heating Revisited,” Journal of Computational Physics, Volume 162, pages 395-410, 2000.

L. G. Margolin, W. J. Rider, “A rationale for implicit turbulence modelling,” International Journal for Numerical Methods in Fluids  (Special Issue: Very large eddy simulation), Volume 39, Number 9, pages 821-841, 2002.

 J. Greenough and W.J. Rider, “A Quantitative Comparison of Numerical Methods for the Compressible Euler Equations: Fifth-order WENO and Piecewise-Linear Godunov,” Journal of Computational Physics, Volume 196(1), pp. 281-296. 2004.

W. J. Rider, “Filtering Non-Soleniodal Modes in Numerical Solutions of Incompressible Flows,International Journal for Numerical Methods in Fluids, Volume 28, pages 789-814, 1998.

E. G. Puckett, A. Almgren, J. Bell, D. Marcus, and W. Rider, “A Second-Order Projection Method for Tracking Fluid Interfaces in Variable Density Incompressible Flows,” Journal of Computational Physics, Volume 130, pages 269-282, 1997.

W. J. Rider “An Adaptive Riemann Solver Using a Two-Shock Approximation,” Computers and Fluids, Volume 28, pages 741-777, 1999.

D. A. Knoll  and W. J. Rider, “A Multigrid Preconditioned Newton-Krylov Method,” SIAM Journal of Scientific Computing, Volume 21, pages 691-710, 1999.

 D. A. Knoll, W. J. Rider, and G. L. Olson, “An Efficient Nonlinear Solution Method for Nonequilibrium Radiation Diffusion,” Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 63, pages 15-29, 1999.

W. J. Rider, D. A. Knoll and G. L. Olson, “A Multigrid Newton-Krylov Method for Multimaterial Radiation Diffusion,” Journal of Computational Physics, Volume 152, pages 164-191, 1999.

W. J. Rider, and D. A. Knoll, “Time Step Size Selection for Radiation Diffusion Calculations,”Journal of Computational Physics, Volume 152, pages 790-795, 1999

V. M. Mousseau, D. A. Knoll and W. J. Rider, “Physics-based preconditioning and the Newton-Krylov method for non-equilibrium radiation diffusion,” Volume 160, pages 743-765 2000.

W. J. Rider “Wall Heating Revisited,” Journal of Computational Physics, Volume 162, pages 395-410, 2000.

J. Bates, D. Knoll, R. Lowrie, W. Rider and V. Mousseau, “On Consistent Time-Integration Methods for Radiation-Hydrodynamics in the Equilibrium Diffusion Limit: Low Energy Density Regime,”Journal of Computational Physics, Volume 167, pages 99-130, 2001.

W. J. Rider  and L. G. Margolin, “Simple Modifications of Monotonicity-Preserving Limiters,”Journal of Computational Physics, Volume 174, pages 473-488. 

W. J. Rider, and R. B. Lowrie, “On the use of classical Lax-Friedrichs with Discontinuous Galerkin Methods,” International Journal for Numerical Methods in FluidsVolume 40, pp. 801-808. 

Lecture Notes

W. J. Rider, “Introduction to Eulerian Hydrodynamics,” Course given at LANL, LA-UR-05-7300, approximately 1000 pages of slides over 28 lectures.

W. J. Rider, "Verification for PCMM," Presentation, PCMM Short Course, May 2010.

W. J. Rider, "Introduction to Computational Fluid Dynamics and Verification & Validation ," Presentation, Modeling Experiment and Validation Summer School, July 2010.

Projects

Selected Publications & Presentations

2015
  • Wills, Ann Elisabet, William J. Rider, "Artificial viscosity: back to the basics," Journal Article, International Journal for Numerical Methods in Fluids >, Vol. 77, No. 7, pp. 400–417, Article No. DOI: 10.1002/fld.3981, Accepted/Published March 2015.
2014
  • Carpenter, John H., Ann Elisabet Wills, Allen C. Robinson, Richard R. Drake, William J. Rider, Bert Debusschere, "Lessons From Uncertainty Propagation Using Tabular, Multiphase Equations of State," Presentation, NECDC 2014, Los Alamos, NM, October 2014.
  • Mattsson, Ann E, John H. Carpenter, William J. Rider, Bert Debusschere, Allen C. Robinson, Richard R. Drake, "Uncertainty Quantification System for EOS," Presentation, JOWOGmat, LLNL, Livermore, CA, March 2014.
  • Rider, William J., "Reconsidering remap methods," Journal Article, International Journal for Numerical Methods in Fluids >, Vol. 76, No. 9, pp. 587–610, Article No. DOI: 10.1002/fld.3950, Accepted/Published November 2014.
2013
2012
2011
2010
2009
  • Kamm, James R, Jerry S Brock, Scott T Brandon, David L Cotrell, Bryan M Johnson, Patrick Knupp, William J Rider, Timothy G Trucano, V Gregory Weirs, "Enhanced Verification Test Suite for Physics Simulation Codes," SAND Report, April 2009.
  • Kamm, James R., Jerry S. Brock, Scott T. Brandon, David L. Cotrell, Bryan M. Johnson, Patrick Knupp, William J. Rider, Timothy G. Trucano, V. Gregory Weirs, "Enhanced Verification Test Suite For Physics Simulation Codes," SAND Report, July 2009.
  • Love, Edward, William J. Rider, Guglielmo Scovazzi, "Stability analysis of a predictor/multi-corrector method for staggered-grid Lagrangian shock hydrodynamics," Journal Article, Journal of Computational Physics, Vol. 228, No. 20, pp. 7543–7564 , Accepted/Published February 2009.
  • Rider, William J., "Complex Shock Wave Phenomena. Wiley 2009.," Book, Encyclopedia of Aerospace Engineering, January 2009.
  • Rider, William J., "High Resolution Multiphysics Simulations of Z-Pinch with ALEGRA," Presentation, SIAM computations; Science and Engineering Conference in Miami, Florida 2009, March 2009.
  • Scovazzi, Guglielmo, John N. Shadid, Edward Love, William J. Rider, "A nodal-based, variational multiscale method for Lagrangian shock hydrodynamics," Journal Article, Computer Methods in Applied Mechanics and Engineering, Submitted September 2009.
  • Scovazzi, Guglielmo, William J. Rider, Edward Love, John N. Shadid, "Stabilized shock hydrodynamics: V. Von Neumann stability analysis of a predictor/multi-corrector Lagrangian method," Journal Article, Computer Methods in Applied Mechanics and Engineering, Submitted February 2009.
2008
2007

Awards & Recognition

2010
  • Rider, William J, Invited Talk, INL MeV Summer School Invited Lecture, Idaho Nationa Laboratory, Provided a lecture on CFD, V&V and Turbulence modeling to the summer school., July 22, 2010.