Lawrence Livermore National Laboratory



Continuum-Mesoscale Thermal Transport Modeler - Postdoctoral Researcher

Location:  Livermore, CA
Category:  Post Docs
Organization:  Physical and Life Sciences
Posting Requirement:  External w/ US Citizenship
Job ID: 105007
Job Code: Post-Dr Research Staff 1 (PDS.1)
Date Posted: March 13 2019

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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 have an opening for a Postdoctoral Researcher to conduct research in the computational modeling of energetic materials exposed to abnormal thermal environments. You will actively participate in the research development and experimental validation of models for the coupled thermal transport and chemical degradation of explosives.  This includes developing predictive models for time- and temperature-at-ignition, as well as the severity of reaction violence. This position is in the energetic hazards team in the Reaction Dynamics Group of the Materials Science Division.

Essential Duties

- Perform multi-scale (continuum and mesoscale) computational simulations of the thermal response of energetic materials. 

- Develop models for the coupled thermal transport, mechanical deformation, and chemical reaction, i.e., “cookoff,” of explosives and propellants.

- Validate modeling capabilities with close-coupled simulations of experiments, analyzing predictions and comparing them to diagnostic data.

- Pursue independent but complementary research interests and interact with a broad spectrum of scientists internally and externally to the Laboratory.

- Collaborate with scientists in a multidisciplinary team environment to accomplish research goals.

- Document research; write and publish papers in peer-reviewed journals, and present results within the DOE community, at working group meetings, and at conferences.

- Perform other duties as assigned.

Qualifications 
- Recent PhD in Chemistry, Engineering, Physics, or a related field.
- Knowledge of thermal transport, mechanics, and/or chemical kinetics.
- Experience running simulations using finite element analysis codes and validating with experimental measurements.
- Ability to develop independent research projects through publication of peer-reviewed literature.
- Proficient verbal and written communication skills as reflected in well-written published papers and effective presentations at seminars, meetings and/or teaching lectures.
- Initiative and interpersonal skills with desire and ability to work in a collaborative, multidisciplinary team environment.

Desired Qualifications

- Experience using multi-physics codes, e.g., Comsol. 

- Experience simulating the abnormal thermal response of energetics.

- Demonstrated skills using scripting tools (e.g., Python) in conducting and analyzing simulations.

Pre-Employment Drug Test:  External applicant(s) selected for this position will be required to pass a post-offer, pre-employment drug test.  This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Security Clearance:  This position requires a Department of Energy (DOE) Q-level clearance.

If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing.  Q-level clearance requires U.S. citizenship.  If you hold multiple citizenships (U.S. and another country), you may be required to renounce your non-U.S. citizenship before a DOE L or Q clearance will be processed/granted.

Note:   This is a 2 year Postdoctoral appointment with the possibility of extension to a maximum of 3 years.  Eligible candidates are recent PhDs within five years of the month of the degree award at time of hire date.