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Computational Fluid Dynamics (CFD) Analyst/Code Developer / NB50655233
Oak Ridge National Laboratory
Oak Ridge National Laboratory

Job Location: Oak Ridge, TN

The Thermal-Hydraulics and Irradiation Engineering (TH&IE) Group within the Reactor and Nuclear Systems Division (RNSD) at Oak Ridge National Laboratory (ORNL) seeks applications for a Computational Fluid Dynamics (CFD) Analyst/Code Developer. RNSD conducts leading-edge science, technology, and engineering research and development (R&D) for current and advanced nuclear reactors and fuel cycles; storage, transport, and disposal of spent nuclear fuel; non-reactor nuclear systems (e.g., accelerators, irradiation facilities, fusion energy systems); and nuclear security programs. One of the major areas of the TH&IE Group is performing thermal/fluid analysis and developing codes to support nuclear reactor design and safety. This group uses, modifies, and develops state-of-the-art CFD and transient thermal/fluids analysis codes and methods to execute nuclear system designs and perform safety evaluations. A group objective is to use ORNLs world leading high performance computing (HPC) platforms to solve large-scale multiphysics problems. Additional analysis areas include fusion energy reactor cooling systems, accelerator target systems, thermal/fluid experiment designs, etc. These efforts support a variety of customers within the US Department of Energy (DOE), the US Nuclear Regulatory Commission (NRC), the Department of Defense, and other government and private organizations. The successful candidate will work with experienced thermal hydraulic engineers to develop, demonstrate, and deploy CFD software and methods, establish problem solution paths, and interpret analysis results.

Major Duties/Responsibilities:
The engineer/scientist filling the position will be required to support development, demonstration, and deployment of advanced CFD and thermal hydraulic software and methods for nuclear reactor and system applications. The candidate is expected to have a strong nuclear background to support integrated multiphysics applications, in addition to strong experience in the use and application of a variety of CFD modeling approaches, including RANS and LES methods. The person filling this position will be asked to modify existing CFD and legacy thermal hydraulic codes, extend the codes capability to analyze new phenomena, and use the codes to provide engineering assessments of thermal hydraulic performance and safety. This might extend to development of new mathematical models, selection of solution algorithms, and implementation in software. The successful candidate will also be asked to build models and to run and assess analysis results using multiple commercial CFD codes, as well as mature CFD codes from the research community. Intimate knowledge of common CFD methods is necessary, and experience in computational multiphase fluid dynamics is a plus. This position requires excellent analytical, computational, writing, and presentation skills to successfully complete assigned projects. The successful candidate will work in a team environment, interacting with other ORNL staff members and outside the TH&IE Group. The position provides the opportunity to collaborate with world-class experts in reactor physics, nuclear fuel performance, materials science, thermal/fluid analysis, etc. The position will interface with several ongoing ORNL programs, including DOE and NRC projects.

Qualifications Required:
Candidates must have a PhD in nuclear engineering and two or more years in a postdoctoral appointment. Applicants must have demonstrated problem-solving skills and a willingness to apply those skills to a variety of problems. The candidate should also have a demonstrated record of publication in relevant conferences and journals. Excellent communication skills, including verbal, presentation, and writing skills, are required to enable effective interaction with technical peers, program managers, and sponsors. Desired Qualifications: Ideal candidates should be able to demonstrate:- Two years of experience developing and using CFD codes for multiple, diverse applications to nuclear systems or engineering systems with similar geometric and multi-physics complexity; -Established aptitude in the application and development of thermal design methods, (CFD), transient analysis, and computational techniques for HPC platforms;-Experience using numerical methods and software for solving thermal and fluid problems and a background in FORTRAN, C and/or C++ applied programming;-Experience in the development and use of reduced-fidelity models using high-fidelity CFD results as a calibration and/or validation basis; and-Familiarity with modern software development tools, quality assurance strategies, uncertainty quantification, and validation practices is also important. Additionally, the successful candidate should be prepared to work with other members of the group and division to develop new programs, write proposals, and pursue new funding opportunities.Additional Information: For information about the TH&IE Group of the Reactor and Nuclear Systems Division, please visit our web site at: about the Reactor and Nuclear Systems Division is available from: position will remain open for a minimum of five days, after which it will close when a qualified candidate is identified and/or hired. ORNL is a multi-program research facility managed by UT-Battelle for the Department of Energy. ORNL is an equal opportunity employer and committed to building and sustaining a culturally diverse workplace.

Oak Ridge National Laboratory

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-verify Employer.
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