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We have an opening for a Postdoctoral Researcher to conduct research in the computational fluid dynamics of suspensions of reacting energetics. You will actively participate in the development and experimental validation of models for the coupled fluid mechanics, heat transfer, and chemical kinetics of viscous energetic mixtures. This position is in the Reaction Dynamics Group of the Materials Science Division.
Essential Duties - Conduct research in computational flow modeling of reacting mixtures of energetic materials. - Develop constitutive and reaction models from small-scale rheological and kinetics experiments. - Design experiments for validating multi-physics models and perform computational simulations of experiments with comparison of predictions to flow, temperature, reaction rate, and particle size measurements. - Contribute to and actively participate in the conception, design and execution of research to address defined problems. - 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. - Maintain and establish laboratory protocols. - Document research; publish papers in peer-reviewed journals, and present results within the DOE community and at conferences. - Perform other duties as assigned.
Qualifications - Recent PhD in chemical engineering, mechanical engineering, chemistry, physics or a related field. - Experience with multi-physics simulations and development of models. - Knowledgeable on the concepts of fluid mechanics, thermal transport, and chemical kinetics. - Ability as an innovative experimentalist with a broad range of experience in experimental design, techniques and execution. - Ability to develop independent research projects through publication of peer-reviewed literature. - Proficient verbal and written communication skills as reflected in 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 with research, commercial, or LLNL multi-physics codes (e.g., STAR-CCM, FLUENT, COMSOL, ALE3D). - Knowledge in modeling of multi-phase fluid flows, including suspension rheology along with bubble and slurry dynamics. - Knowledge in chemical kinetics of single phase and multi-phase mixtures of solids, liquids, and gases.
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.
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 $2.3 billion, employing approximately 6,900 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.
Internal Number: 106773
About Lawrence Livermore National Laboratory
For more than 60 years, the Lawrence Livermore National Laboratory has applied science and technology to make the world a safer place.Livermore’s defining responsibility is ensuring the safety, security and reliability of the nation’s nuclear deterrent. Yet LLNL’s mission is broader than stockpile stewardship, as dangers ranging from nuclear proliferation and terrorism to energy shortages and climate change threaten national security and global stability. The Laboratory’s science and engineering are being applied to achieve breakthroughs for counterterrorism and nonproliferation, defense and intelligence, energy and environmental security.
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