Ellaway Blues Consulting
Thermal-Hydraulics Engineer
Ellaway Blues Consulting, Granite Heights, Wisconsin, United States
Overview
Thermal-Hydraulics Engineer – Advanced Reactor Systems We’re looking for a Thermal-Hydraulics Engineer to support the design, modeling, and experimental testing of advanced liquid-metal reactor technologies. This role focuses on evaluating system-level thermal-fluid behavior, improving passive safety performance, and advancing high-fidelity simulation tools. The ideal candidate brings strong technical expertise in thermal-hydraulic modeling, experience with liquid-metal or low Prandtl number systems, and the ability to collaborate across disciplines to inform system design and safety validation. Key Responsibilities
Develop steady-state and transient thermal-fluid models for advanced reactor systems using system codes such as RELAP5-3D, SAM, or TRACE. Perform CFD and subchannel simulations using commercial tools (e.g., ANSYS Fluent, STAR-CCM+, CTF) to evaluate flow behavior and heat transfer across reactor components. Support thermal-fluid testing activities, including the development of test plans, data analysis, and model validation for sodium-cooled systems. Collaborate closely with core design, safety analysis, systems engineering, and control teams to ensure accurate integration of thermal-hydraulic models across design phases. Evaluate modeling tools for capability gaps and propose enhancements aligned with regulatory expectations and industry standards. Prepare clear technical documentation, including analysis reports, test summaries, and design review materials. Qualifications
Education & Experience Bachelor’s degree (or higher) in Nuclear Engineering, Mechanical Engineering, or a related field with a focus on thermal-fluid sciences. 3–10 years of experience in thermal-hydraulic simulation and system-level modeling, ideally involving sodium or other liquid-metal-cooled reactors. Technical Skills Proficiency with system analysis codes such as RELAP5-3D, SAM, or TRACE. Experience with CFD and subchannel analysis tools (e.g., Fluent, CTF, STAR-CCM+, OpenFOAM). Familiarity with MOOSE-based platforms (e.g., PRONGHORN, BISON) is a plus. Strong scripting and data analysis skills (Python, MATLAB, etc.). Understanding of thermal-fluid behavior in low Prandtl number systems. Awareness of verification and validation practices in nuclear applications.
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Thermal-Hydraulics Engineer – Advanced Reactor Systems We’re looking for a Thermal-Hydraulics Engineer to support the design, modeling, and experimental testing of advanced liquid-metal reactor technologies. This role focuses on evaluating system-level thermal-fluid behavior, improving passive safety performance, and advancing high-fidelity simulation tools. The ideal candidate brings strong technical expertise in thermal-hydraulic modeling, experience with liquid-metal or low Prandtl number systems, and the ability to collaborate across disciplines to inform system design and safety validation. Key Responsibilities
Develop steady-state and transient thermal-fluid models for advanced reactor systems using system codes such as RELAP5-3D, SAM, or TRACE. Perform CFD and subchannel simulations using commercial tools (e.g., ANSYS Fluent, STAR-CCM+, CTF) to evaluate flow behavior and heat transfer across reactor components. Support thermal-fluid testing activities, including the development of test plans, data analysis, and model validation for sodium-cooled systems. Collaborate closely with core design, safety analysis, systems engineering, and control teams to ensure accurate integration of thermal-hydraulic models across design phases. Evaluate modeling tools for capability gaps and propose enhancements aligned with regulatory expectations and industry standards. Prepare clear technical documentation, including analysis reports, test summaries, and design review materials. Qualifications
Education & Experience Bachelor’s degree (or higher) in Nuclear Engineering, Mechanical Engineering, or a related field with a focus on thermal-fluid sciences. 3–10 years of experience in thermal-hydraulic simulation and system-level modeling, ideally involving sodium or other liquid-metal-cooled reactors. Technical Skills Proficiency with system analysis codes such as RELAP5-3D, SAM, or TRACE. Experience with CFD and subchannel analysis tools (e.g., Fluent, CTF, STAR-CCM+, OpenFOAM). Familiarity with MOOSE-based platforms (e.g., PRONGHORN, BISON) is a plus. Strong scripting and data analysis skills (Python, MATLAB, etc.). Understanding of thermal-fluid behavior in low Prandtl number systems. Awareness of verification and validation practices in nuclear applications.
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