Faculty - John R. Williams

Education

• B.A. 1971, Oxford University
• M.S. 1973, University of California, Los Angeles
• Ph.D. 1977, Swansea University

Research Interests

• Information Technology
• Web-Based Education Technology
• Computer Simulation
• Discrete Element Analysis of Granular and Powder Systems

Teaching Interests

• Modern Software Architecting and Design
• Web Services and Distributed Computing
• Discrete Element Simulation and Analysis of Discontinua

Selected Publications

1. Williams, J.R., O'Connor, R., Torczynski, J., Preece, D., and Klosek, J., "Discrete Element Modeling of Sand Production", International Journal of Mechanical & Mineral Science, Vol. 34, No. 3-4 paper, No. 231, 1997.
2. Williams, J.R. and O'Connor, R., "Discrete Element Simulation and the Contact Problem", Archives of Computational Methods in Engineering, Vol. 6, 4, 279-304, 1999.
3. Jensen, R., D. Preece, B. Cook, E. Perkins and J. Williams, "Coupled Fluid-flow/particle-motion Computer Modeling of Sand Production in Oil Wells", SPE No 56630, Society of Petroleum Engineers Annual Conference, Houston, TX, 1999
4. Cook, B, D. Noble, D. Preece and J. Williams, "Direct Simulation of Particle-laden Fluids", Pacific Rocks 2000 Ed Girard, Liebman, Breeds and Doe, Balkema Press, Rotterdam, 297-286, 2000
5. Preece, D., Jensen, R., Perkins, E., and Williams, J. "Sand Production Modeling using Superquadric Discrete Elements and Coupling of Fluid Flow and Particle Motion", 37th US Rock Mechanics Symposium (Vail Rocks). Balkema, Amsterdam, 1999.
6. E. Perkins and John R. Williams, "A Fast Contact Detection Algorithm Insensitive to Object Sizes", International Journal of Computer Aided Methods in Engineering - Engineering Computations, September, 2001.
7. Lee, M.Y., Cook, B., Digoiovanni, A., Perkins, E., and Williams, J., "Simulation of Borehole Failure Phenomena Using Discrete Element Modeling", Enos Trans. AGU, 82(47), T51A-0846, 2001.
8. M.Y. Lee†, B.K. Cook†, D.R. Bronowski†, A.A. DiGiovanni†, E.D. Perkins‡ and J.R. Williams‡ "Simulation of Borehole Failure Phenomena using Discrete Element Modeling", (T51A-0846) Int. J. of Geomechanics 2002.
9. Ning,  H., Williams, J.R., Slocum, A.H., Sanchez, A., "Inkboard Tablet PC Enabled Design-oriented Learning", Special Issue of International Journal on Advanced Technology for Learning, #428-104, ISSN 1710-2251, Vol. 2, Issue 1, January 2003.
10. Cook, B., Noble, D.R., and Williams, J.R., A Direct Simulation Method for Particle-Fluid Systems", Special Issue of Int'l Journal of Computer Aided Methods in Engineering - Engineering Computations, Vol. 21, No. 2/3/4, 2004.
11. Komodromos, P., and Williams, J.R., "Dynamic Simulation of Multiple Deformable Bodies Using Combined Discrete and Finite Element Methods", Special Issue of Int'l Journal of Computer Aided Methods in Engineering - Engineering Computations, Vol. 21, No. 2/3/4, 2004.
12. Johnson, S., Williams, J.R., Cook, B.K., "Contact Resolution Algorigthm for An Ellipsoid Approximation for Discrete Element Modeling", Special Issue of Int'l Journal of Computer Aided Methods in Engineering - Engineering Computations, Vol., 21, No. 2/3/4, 2004.
13. Cook, B.K., Lee, M.Y., A.A., DiGiovanni, Bronowski, D.R., Perkins, E.D. and Williams, J.R., "Discrete Element Modeling Applied to Laboratory Simulation of Near-Wellbore Mechanics", Int'l Journal of Geomechanics 4(1): 19-27, 2004.