Lawrence Livermore National Laboratory



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Postdoctoral Research Staff Member

Location:  Livermore, CA
Category:  Post Docs
Job ID: 103051
Job Code: 
Date Posted: 

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Science and Technology on a Mission!

For more than 60 years, the Lawrence Livermore National Laboratory (LLNL) has applied science and technology to make the world a safer place.

We are looking for a postdoctoral researcher to perform research on high-order finite element methods for thermal radiative transfer (TRT). You will develop and implement new algorithms for efficiently and robustly solving the deterministic TRT equations on high-order curved meshes. Potential topics include:SN transport sweeps on curved meshes, positivity-preserving methods that satisfy TRT’s unique constraints, physics-informed preconditioners for high-order TRT, and time-stepping methods that avoid SN transport sweeps.  This position is inthe Computation Directorate within the Center for Applied Scientific Computing (CASC) Division.

Essential Duties
- Develop and implement new methods for solving the TRT equations using high-order finite elements in collaboration with a multidisciplinary computational physics research team.
- Perform research in one or more areas relevant to the overall project.
- Help develop a new C++ research code to test out ideas for high-order TRT.
- Contribute to group grant proposals andprogress reports, including proposal presentations and preparation of written proposals.
- Interact with application teams to understand impact of the developed methods on real physics applications.
- Participate in the establishment of future research directions.
- Document and disseminate research and development progress via technical reports, journal publications, and presentations within the DOE community and at conferences.
- Pursue independent (but complementary) research interests and interact with a broad spectrum of scientists internally and externally to define and carry out the research.
- Perform other duties as assigned.

Qualifications
- PhD in computational science, applied mathematics, nuclear engineering/deterministic transport, or related field.
- Experience with numerical methods for deterministic transport (neutron or photon), high-order finite elements, or both.
- Demonstrated ability to perform self-directed research.
- Demonstrated ability to work independently with minimal direction and to make timely progress on complex research problems within the scope of a relevant assignment.
- Ability to work well within a team environment.
- Experience with C/C++ or Fortran.
- Demonstrated effective verbal and written communication skills necessary to interact in a clear and concise manner, author technical and scientific reports and papers, and deliver scientific presentations.

Desired Qualifications
- Experience with C++.
- Experience with parallel programming techniques, particularly MPI, OpenMP, and/or CUDA.
- Experience with collaborative development and testing of large scientific simulation codes.

Pre-Employment Drug Test:  External applicant(s) selected for this position will be required to pass a post-offer, pre-employment drug test.
 

Anticipated Clearance Level:  None.

 

Note:   This is a one year Postdoctoral appointment with the possibility of extension to a maximum of three years.  Eligible candidates are recent PhDs within five years of the month of the degree award at time of hire date.

About Us

Lawrence Livermore National Laboratory (LLNL), located in the San Francisco Bay Area (East Bay), is a premier applied science laboratory that is part of the National Nuclear Security Administration (NNSA) within the Department of Energy (DOE).  LLNL's mission is strengthening national security by developing and applying cutting-edge science, technology, and engineering that respond with vision, quality, integrity, and technical excellence to scientific issues of national importance.  The Laboratory has a current annual budget of about $1.5 billion, employing approximately 6,000 employees.

 

LLNL is an affirmative action/ equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, protected veteran status, age, citizenship, or any other characteristic protected by law.

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