CLOSED: Post-Doctoral Associate Opportunity (2012): Geometry & Mesh for Radiation Transport and Multi-Physics Simulation

The Computational Nuclear Engineering Reasearch Group (CNERG) is working on a number of projects related to the the advanced use of geometry and mesh technology to support nuclear simulation, including coupled multi-physics simulation and Monte Carlo radiation transport.

The DataTransferKit is an open-source component library providing scalable algorithms for transferring and synchronizing solutions between different physics solvers in massively parallel multi-physics simulations. As part of the Consortium for Advanced Simulation of LWR (CASL), CNERG is responsible for providing this fundamental capability and related improvements to measure and ensure conservation and to support uncertainty quantification.

The Direct Accelerated Geometry Monte Carlo (DAGMC) toolkit is an open-source toolkit that enables the use of complex CAD-based geometry in Monte Carlo radiation transport simulation. Ongoing research and development efforts are focused on

  • alternative tessellation and surface mesh methods for robustness and performance improvement
  • advanced tallies on unstructured mesh including expansion methods and kernel density estimators

This work involves close collaboration with the Fathom team based at Argonne National Laboratory and the CASL team based at Oak Ridge National Laboratory.

CNERG is seeking a qualified individual to assist in the research and development needs of these exciting projects.

Degree and area of specialization

  • PhD in Nuclear Engineering, Computer Science, Applied Math or related fields

Required experience

  • Demonstrated knowledge of C++ & python in a linux environment
  • Development of scientific software for solving problems in physics and/or engineering
  • Familiarity with Monte Carlo radiation transport fundamentals
  • Strong oral and written communication skills

Desired Experience

  • Experience using the components of Trilinos ecosystem

  • Experience with a modern team-based software development processes:

    • version control (we use svn & git)
    • bug/issue tracking (we use trac & github)
    • test driven development (we use google test)
    • automatic documentation (we use doxygen)
    • build & configuration management (we use cmake, make)
  • Experience with mesh generation and related topics

Specific duties

Sepcific duties will include the following:

  • Develop methods for assessing the conservation of important physical quantities during solution transfer
  • Develop methods for propagating uncertainty estimates through large mesh solution transfer operations, including uncertainty due to the transfer operations
  • Investigate the impact of alternative triangle surface meshing algorithms on the accuracy, robustness and performance of Monte Carlo radiation transport
  • Investigate methods for the modification of triangular surface meshes to improve the above metrics
  • Extend the implementation of unstructured mesh tallies to include different mesh element types and tally estimators
  • Author publications for refereed journals and important conference proceedings

Other Details

Salary: $50,000-$70,000 depending on background and experience
Start: ASAP

UW-Madison is an equal opportunity/affirmative action employer. We promote excellence through diversity and encourage all qualified individuals to apply.

To apply, please send application materials to wilsonp _at_