Thermal Hydraulics Engineer

Aalo Atomics•Idaho Falls, ID

1d•Onsite

About The Position

We are seeking a skilled CFD Analyst / Thermal-Fluid Engineer to perform high-fidelity thermal-fluid simulations supporting nuclear and energy-related applications. This role focuses on applying advanced CFD tools to complex heat transfer and fluid flow problems, often in support of reactor components, experiments, or coupled multi-physics analyses.

Requirements

MSc in Nuclear Engineering, Mechanical Engineering, or a related field.
5+ years of hands-on CFD experience applied to thermal-fluid problems.
Demonstrated expertise with one or more CFD platforms (STAR-CCM+, COMSOL, Altair, Nek5000, or OpenFOAM).
Strong background in numerical methods for fluid flow and heat transfer.
Ability to independently plan and execute complex CFD analyses.
Based in the United States
Willing to work on-site in Idaho Falls, Idaho.

Nice To Haves

Experience with nuclear facilities or other safety-critical infrastructure
Familiarity with nuclear energy regulatory environment
Understanding of radiation and thermal effects on materials and long-term degradation mechanisms
Knowledge of probabilistic risk assessment methodologies
Experience with nuclear-related CFD applications (e.g., reactor components, experimental test sections).
Knowledge of coupling CFD with system codes or structural/thermal solvers.
Experience working in regulated or high-quality engineering environment.

Responsibilities

Develop and execute CFD models for thermal-fluid analysis.
Perform simulations involving conjugate heat transfer, turbulence modeling, and single- or multi-phase flows.
Apply sound numerical methods to ensure solution accuracy, stability, and convergence.
Conduct mesh generation, sensitivity studies, and model validation against experimental or analytical data.
Collaborate with system analysts, designers, and experimental teams to support integrated thermal-hydraulic evaluations.
Document modeling assumptions, methods, and results in clear technical reports.