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Thomas Zacharia, PhD.

Associate Laboratory Director
Computing and Computational Sciences
Oak Ridge National Laboratory


Dr. Zacharia serves as Associate Laboratory Director, Computing and Computational Sciences at the Oak Ridge National Laboratory (ORNL). The Computing and Computational Sciences directorate includes the Computer Science and Mathematics Division, the Computational Sciences and Engineering Division, and the Networking and Computing Technologies Division.

He directs the Center for Computational Sciences and leads the development and implementation of ORNL's high performance computing strategy. This strategy includes the development of topical user centers for high performance computing, the strengthening of ORNL's computational and networking infrastructure, and continued leadership in terascale computational applications, algorithms, and hardware.

His vision and efforts led to the acquisition of ORNL's terascale computing facility, making the Laboratory home to the most powerful nonclassified computers in the nation; thus greatly increasing ORNL's capability to support advanced climate modeling and genome research for DOE and transportation modeling for DOT and industry.


Research Interests and Activities:

  • High Performance Computing
  • Modeling of Polymer Composites
  • Massively parallel algorithms for Stefan problems
  • Massively parallel algorithms for large deformation, contact/impact problems
  • Artificial intelligence (Neural Network) for process optimization and control
  • Development of computational models for investigating materials processes
  • Probablistic modeling of solidification processes
  • Scientific visualization
  • Supercomputing for Automotive Applications Partnership
  • Modeling of carbon-fiber composite structures for automotive crashworthiness
  • High performance computing for superplastic forming
  • Artificial Intelligence and neural network for sensing and control of automotive welds
  • Rapid prototyping for metal mold processes
  • Development and implementation of computational models for materials joining processes
  • Modeling of combustion process for pulp and paper industry
  • Modeling of casting/solidification
  • Sensing and control of stamping process

More than 100 publications in fields of expertise.


Ph.D. Materials Science, Clarkson University (1987)
M.S. Materials Science, University of Mississippi (1984)
B.S. Mechanical Engineering, Regional Engineering College (1980)

Email: zac@ornl.gov
Phone: 865-574-4897
Fax: 865-574-4839
P.O. Box 2008
Bldg. 4500N MS 6232
Oak Ridge, TN 37831-6232