Core Thermal-Hydraulics Methods Engineer

Oklo•Santa Clara, CA

10d•$73,000 - $157,000•Remote

About The Position

Thermal-Hydraulics Engineers at Oklo are responsible for analyzing fluid flow and heat transfer within a reactor and associated systems. This work includes engineering analyses of thermal-fluid dynamics, clear and thorough documentation of the analyses, as well as interfacing with design teams. A Core Thermal-Hydraulics Methods Engineer will contribute to the development, qualification, and validation of methods for modeling coolant flow within reactor cores using one-dimensional models and intermediate-fidelity subchannel models.

Requirements

Bachelors, Masters, or PhD in a technical field, such as nuclear, mechanical, or aerospace engineering
Proficiency with thermal-hydraulics (thermal fluids) analysis methods
Core competencies in heat transfer, fluid dynamics, and thermodynamics first principles
Experience with low-fidelity and intermediate-fidelity (e.g., porous body and correlation-based) models for heat transfer and fluid flow
Experience with numerical methods and software development for heat transfer and fluid flow problems
Experience with data processing (e.g., pre-processing, post-processing, scripting)

Nice To Haves

Fluency with Python
Experience with CI/CD computing environments
Experience with reactor systems codes, such as SAS4A/SASSYS-1, SAM, RELAP, TRACE, or GOTHIC
Experience with qualification and validation of analyses
Experience with subchannel analysis codes, such as DASSH, MOOSE-Subchannel, COBRA-TF, or similar
Experience with high-fidelity computational fluid dynamics analysis

Responsibilities

Modeling core thermal-hydraulic behavior using subchannel codes such as DASSH, or MOOSE-Subchannel one-dimensional systems codes such as SAS4A/SASSYS-1 or SAM first principles approaches and in-house flow network models
Developing methods to analyze core thermal-hydraulic behavior at steady-state and during transients
Developing and utilizing analysis methods that efficiently and effectively build confidence in a design
Automation, verification, and validation of modeling and simulation tools in support of analyses
Collaborating cross-functionally to define design requirements, and providing technical feedback to quick-iterating design teams
Document work using modern tools and techniques, and write well-written, thoughtful technical reports