Developer Assistant

Curriculum Vitae

JIN YAO

U.S Citizen with a DOE Q-Clearance

Lawrence Livermore National Laboratory

Weapon and Complex Integration

**** **** ****** *-***

Livermore, CA 94551 Phone: 925-***-****

Email: ****@****.***

COMPUTATIONAL PHYSICIST / APPLIED MATHEMATICIAN

• Expertise in developing and implementing numerical methods for solving

computational science and engineering problems of national security interest.

• Ph.D. Applied Mathematics, University of Illinois at Urbana-Champaign

TECHNICAL INTERESTS

• Computational Geometry

• Massively parallel multi-physics simulations using finite element and finite

difference methods

• Numerical front tracking and interface reconstruction, level-set methods

• Arbitrary Lagrangian-Eulerian methods, grid-free methods

• Modeling, simulation and theoretical treatment of detonation shock-dynamics

EDUCATION

• Ph. D. Applied Mathematics, University of Illinois at Urbana-Champaign

• M. S. Mechanics, University of Illinois at Urbana-Champaign

• M. S. Computational Physics, Chinese Academy of Sciences

• B. S. Theoretical Physics, University of Science and Technology of China

EMPLOYMENT

• Computational Physicist / Applied Mathematician

Weapons and Complex Integration, Lawrence Livermore National Laboratory

Livermore, CA, June 2002–Present.

Developing and maintaining front tracking package (C++) for ALE3D

Developing curved interface reconstruction package for ALE3D

Developing mesh relaxation and boundary relaxation methods for ALE3D

Developing conservative surface relaxation for MESQUITE

Developing applied algorithms for general code improvement

• Senior Scientist

General Dynamics Ordinance and Tactical Systems

Niceville, FL, January 2000 – May 2002

- Developed and maintained the MLSPH package for HULL

• Scientist

Center of Simulation of Advanced Rockets, University of Illinois

Urbana, IL 1999-2000

-Developing numerical front tracking methods

• Research Associate

University of Illinois at Urbana-Champaign

Urbana, IL, 1996-1999

-Developed the detonation shock dynamics package NONIDL_PLUS, which is

now in use at LANL

-Developed theory and simulation code for non Burke-Schumann flame structure

• Research Assistant

University of Illinois at Urbana-Champaign

Urbana, IL 1990-1996

-Developed the time-dependent asymptotic theory (the Yao-Stewart Equation) of

the detonation shock dynamics

• Research Assistant

Institute of Applied Mathematics, Chinese Academy of Sciences

Beijing, China 1983-1989

-Developed simulation code of type II supernovae.

TECHNICAL SKILLS

Applied Mathematics

Computational geometry

Optimization methods

Linear and abstract algebra, real and complex analysis,

Applied numerical analysis

Finite element / finite difference methods, grid-free method

Numerical solution of partial differential equations

Mathematical physics

Applied Physics

Continuum mechanics

Detonation shock dynamics

General / Advanced physics

PROGRAMMING LANGUAGES AND SOFTWARE APPLICATIONS

Programming Languages: C++, C, FORTRAN, BASIC, PASCAL

High Level Scripting Languages: MatLab, Mathematica, UNIX shell scripting

Software Applications: Totalview, CVS, ClearCase, Purify, Visit, TrueGrid

HONORS AND DISTINCTIONS IN MATHEMATICS

• First Place in doctorate qualification exam, Department of Mathematics, UIUC

• First place in mathematics contest, University of Science & Technology of China

• First place in pre-college mathematics contest, Shaanxi Province, China

• First place in pre-college mathematics contest, City of Xi'an, China

SCIENTIFIC SOFTWARE DEVELOPMENT

• Primary developer of NONIDL_PLUS: a detonation shock dynamics package for

generating the Dn-κ relation of non-ideal HE materials

• Primary developer of OTI_MLSPH: a high-speed material interaction grid-free

code for general applications including the shaped-charge.

• Primary developer of the ALE3D DSD: a three-dimensional detonation front

tracking package of high accuracy

• Original developer of the curved interface reconstruction in ALE3D.

• Primary developer of the equi-distance mesh relaxer for a general structured

mesh, to update in ALE3D.

• Assistant developer for conserve surface-relaxation in MESQUITE

SCIENTIFIC THEORY ESTABLISHMENT

• Co-developer of the time dependent theory of the detonation shock-dynamics.

PUBLICATIONS

Book Chapters

• Stewart, D.S., Aslam, T.D., and Yao, J., “Level-set technique applied to unsteady

detonation propagation, in Modeling in Combustion Science”, Lecture Notes in

Physics, Springer-Verlag, 352-369, 1994.

• Yao, Jin, “Two easy proofs for Morley's theorem”, Selected Essays on

Elementary Mathematics, Shanghai Education Publishing, 1990.

Journal Articles

• Yao, Jin, and Stewart, D.S., “On the dynamics of multi-dimensional

detonation”, Journal of Fluid Mechanics, 309, 225-275, 1996.

• Buckmaster, John, Jackson, T., and Yao, J. “An elementary discussion of

propellant flame geometry”, Combustion and Flame, 117(3), 541-552, 1999.

• Stewart D.S., and Yao, J., “The normal detonation shock velocity-curvature

relationship for materials with non-deal equation of states and multiple turning

points”, Combustion and Flame, 113, 224-235, 1998.

• Yao, Jin, and Stewart, D.S., “On the normal detonation shock velocity-curvature

relationship for materials with large activation-energy”, Combustion and Flame,

100, 519-528, 1995.

• Ching, C., Ho, T., Wang, Y. and Yao, J. “Possible supernovae multi-explosions

and induced gravitational collapse”, Communication on Theoretical Physics, 17,

473-484, 1992.

• Yao, Jin, Wang, Y., and Wang, W., “Effects of general relativity on supernova

core collapse”, Chinese Journal of Computational Physics, 9, 649, 1990.

• Wang, Y., Li, H., Yao, J., and Wang, W., “The equation of state and supernova

explosion”, Chinese Journal of Computational Physics, 7, 321, 1989.

• Wang, Y., Li, H., Yao, J., and Wang, W., “ Effect of the equation of state on the

stellar core collapse”, Chinese Journal of Computational Physics, 6, 257, 1989.

Proceedings

• Pfau, D., Najjar, F.M., Yao, J., McCandless, B., Nichols, A.,

"Parallel Detonation Shock Dynamics Algorithm for Insensitive Munitions

using ALE3D", 26th International Ballistics Symposium, Miami, FL, 2011.

• Yao, Jin, “A fast three-dimensional lighting time algorithm”, Shock Compression

of Condensed Matter, 421-424, 2003.

• Yao, Jin, Gunger, M.E., Matuska, D.A., “Simulation of detonation problems with

the MLS grid-free methodology”, The Twelveth International Detonation

Symposium, San Diego, 2002.

• Yao, Jin, Gunger M.E., “Simulation of shaped-charge with SPH rezone method”,

The Twelveth APS SCCM Topical Conference, Atlanta, Georgia, 2001.

• Stewart, D.S., and Yao, J., “Computation of shock acceleration effects on

detonation shock dynamics for explosives described by general equation of

states”, The Twenty Eighth International Symposium of Combustion, 1999.

• Buckmaster, John, and Yao, J., “Flame configuration in heterogeneous

propellant”, The Fourth APISCEU, Bangkok, Thailand, 1997.

• Stewart, D.S., Aslam, T.D., and Yao, J., “The evolution of cellular detonation”,

The Seventh International Colloquium on Dust Explosion, Cambridge, 1996.

Technical Reports

• Yao, Jin, “ An Efficient Inclusion Test for a Massive Point Distribution”, LLNL-

TR-636668, 2013.

• Yao, Jin, “ A Mesh Relaxation Study and Other Topics”, LLNL-TR-637101,

2013.

• Yao, Jin, “Can The Order of Convergence be Higher than the Number of Function

Values Used? (Part 1)”, LLNL-TR-636733, 2013

• Yao, Jin, “Tracing Particles in a Mesh with Curved Elements”, LLNL-TR-

637714, 2013.

• Yao, Jin “A Local Algorithm For Topology Changes With Front Propagation By

Marked Particles”, To Submit, 2013.

• Yao, Jin, “An Efficient Line-Sweeping Method to Generate Structured Meshes”,

In Preparation, 2013.

• Yao Jin, “ The Equi-Distance Mesh Relaxation”, In Preparation, 2013.

• Yao Jin, “ Reconstructing a Curved Boundary with Tangential Moment

Conservation”, In Preparation, 2013.

• Yao Jin, “Tangential Moment Conserved Surface Relaxation for Three-

Dimensional Surfaces with Triangulation”, To Submit, 2013.

• Yao, Jin, “Time Integration of the Front Tracking Equation for a Quadratic

Surface in Three-Dimensions, In Preparation, 2013.

• Yao, Jin, “Local Iso-Surface Reconstruction with Directional Walk on a Hydro

Mesh”, In Preparation, 2013

• Yao, Jin, “A High Order Volume of Fluid Interface Reconstruction

Methodology”, In Preparation, 2013

• Yao, Jin, “The Logical Distance to Boundary and Boundary Orthogonality in

Mesh Relaxation”, In Preparation, 2013.

• Yao, Jin, “An Application of Directional Walking: Converting a 3D Inclusion

Test to 2D”, To Submit, 2013.

• Yao, Jin, “The Geometrical Properties of a DSD Front Turning over an Obstacle”,

To Submit, 2013.

• Yao, Jin, “An Efficient Marked Particle Front Tracker Applied to Problems of

Detonation Shock Dynamics”, In Preparation, 2013

• Yao, Jin, “A High Order Ray-Tracing Algorithm”, In Preparation, 2013

• Yao, Jin, “Directional Walking: A simple way to intersect arbitrary geometries”,

LLNL-JRNL-400055, 2007.

• Yao, Jin, “A geometrical DSD lighting algorithm on arbitrary unstructured

meshes”, UCRL-JRNL-213932, 2005.

• Yao, Jin, “On the inverse parametric mapping of hexahedral finite elements”,

UCRL-JRNL-214066, 2005.

• Yao, Jin, “A Simple Arbitrary Solid Slicer”, UCRL-JRNL-214068, 2005.

• Yao, Jin, and Stewart D. S., “Critical Detonation Shock Curvature and Failure

Dynamics: Developments in the Theory of Detonation Shock Dynamics”, TAM

Report NO. 746, UIUC, 1994.

Thesis

• Yao, Jin, “The dynamics of multi-dimensional detonation”, Ph.D. thesis,

University of Illinois at Urbana-Champaign, 1996.

Presentations

• Yao, Jin, “A General Dead-Zone Predicted with the Detonation Shock Dynamics

Theory”, SIAM Numerical Combustion Conference 2013, San Antonio, Texas,

2013.

• Yao, Jin, “An Efficient Line-Sweep Mesh Relaxation Method with Locally

Conservative Interface Reconstruction”, Multi-material Workshop, Arcachon,

France, 2011.

• Yao, Jin, “Interface reconstruction with directional walking”, Multi-material

Workshop, Pavia, Italy, 2009.

• Yao, Jin, “ALE3D DSD Implementation for Multiple Detonation Speeds”, Work

In Progress at LLNL, Livermore, California, 2008.

Yao, Jin, “ The Turning Points on a Dn-κ Curve”, SIAM Numerical Combustion

•

Conference 2008, Monterey, California, 2008.

• Yao, Jin, “Geometrical Interface Reconstruction on Unstructured Meshes”,

Invited Talk at LANL, Los Alamos, NM, 2007.

• Yao, Jin, “Geometrical Reconstruction of Material Interfaces with Arbitrary

Mesh”, Multi-material Workshop, Prague, Czech Republic, 2007.

• Yao, Jin, “ Simulation of Shaped-Charge with MLSPH”, Invited Talk at LANL,

Los Alamos, 2001.

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