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CFD Jobs Database - Job Record #15410

Job Record #15410
TitleCFD Application Engineer
CategoryPostDoc Position
EmployerOak Ridge National Laboratory
LocationUnited States, Tennessee, Oak Ridge
InternationalYes, international applications are welcome
Closure DateFriday, November 30, 2018
Apply here:
Job Code: NB50660290

The Advanced Reactor Engineering Group within the Oak Ridge National Laboratory (ORNL) 
Reactor and Nuclear Systems Division (RNSD) seeks applications to fill a postdoctoral research 
associate position focused on the application of CFD modeling and simulation technology for 
analyses of nuclear and other thermal energy systems. 

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 such as accelerators, irradiation facilities, and fusion energy 
systems; and nuclear security and defense programs. The Advanced Reactor Engineering Group 
delivers outstanding solutions to challenging fluid, heat transfer and irradiation engineering problems 
through a unique integration of design, simulation, fabrication, and experimentation expertise.

Major Duties/Responsibilities
The successful candidate will work with experienced thermal hydraulic engineering R&D staff to 
develop next-generation thermal hydraulics simulation methods, CFD simulation methods, and 
models for a variety of nuclear reactor or thermal energy systems using world-leading high-
performance computing platforms. Specific duties will depend on the experience and expertise of the 
individual applicant, but may include:
-High resolution LES or DNS simulations to define pressure loss or heat transfer coefficients in 
complex design geometries;
-Multiphase RANS or LES simulations of reactor cores, heat exchangers, pumps, pressurizers, 
condensers, etc.;
-Integrated multiphysics simulations of reactor cores or other components, including CFD 
-Component design optimization, performance, or safety evaluation methods;
-Development of reduced order models, closure models, or hi2lo calibration models, or;
-Simulation solution verification, model validation, and uncertainty quantification.

The successful candidate will work in a team environment, interacting with other ORNL staff 
members within the Advanced Reactor Engineering group. The position provides the opportunity to 
collaborate with world-class experts in reactor physics, nuclear fuel performance, materials science, 
and thermal/fluid analysis. The candidate will interact with other members of the group and division 
to develop new programs, write proposals, and pursue new funding opportunities. Thorough 
documentation of work performed to meet sponsor and mission needs is expected, including 
preparation of peer-reviewed papers for publication in journals and conference proceedings.

Qualifications Required

Candidates must have a PhD in nuclear engineering, mechanical engineering, or engineering physics. 
Demonstrated experience in applying and extending CFD codes for application to nuclear or similarly 
complex thermal energy systems is required. Candidates must also have demonstrated problem-
solving skills, a willingness to apply those skills to a variety of engineering problems, and an 
established aptitude in the application and development of CFD and heat transfer, transient
analysis, and computational techniques for HPC platforms.

Excellent verbal communication, presentation, and writing skills, are required to enable effective 
interaction with technical peers, program managers, and sponsors. The ideal candidate should have 
demonstrated substantive experience using numerical methods and software for solving
thermal and fluid problems and a background in FORTRAN, C and/or C++ applied programming. 
Knowledge of Python, Java, or other scripting languages is desired. Experience using parallel Linux 
computing platforms, parallel job submission scripts, common software repository tools, and parallel 
visualization software is also desired. The ideal candidate is expected to have a strong fundamental 
understanding of the principles of fluid mechanics and heat transfer, as well as experience in the use 
and application of a variety of CFD turbulence modeling approaches, including RANS and LES 
methods. Experience using common multiphase CFD methods such as Volume of Fluid (VOF), level 
set, or Eulerian-Eulerian dispersed phase methods is desired, and familiarity with single and 
multiphase experimental methods is beneficial. Experience with reduced order modeling methods 
such as Proper Orthogonal Decomposition or high-to-low multi-scale integration methods, especially 
Bayesian calibration or Deep Learning methods, is also beneficial.

Specific experience in the application of CFD methods for nuclear system design optimization, 
performance, and safety analysis and its application in high performance computing environments is 
desirable. Prior experience with commercial CFD codes such as STAR-CCM+, ANSYS Workbench, 
or COMSOL Multiphysics, as well as open source CFD codes such as OpenFOAM or Nek5000, 
along with the Dakota uncertainty quantification tools will be beneficial.

This position requires access to technology that is subject to export control requirements. Successful 
candidates should be capable of meeting these requirements in the future for such access without an 
export control license. Applicants cannot have received the most recent degree more than five years 
prior to the date of application and must complete all degree requirements before starting their 

This position is a temporary, full-time assignment for 24 months.
Contact Information:
Please mention the CFD Jobs Database, record #15410 when responding to this ad.
NameRecruitment Manager
Emailjainpk [AT]
Email ApplicationYes
Record Data:
Last Modified19:21:54, Friday, October 19, 2018

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