Reactor Core Thermal Fluids Engineer

Oklo•Santa Clara, CA

13h•$80,000 - $175,000•Remote

About The Position

The Core Thermal-Hydraulics team at Oklo is responsible for analyzing fluid flow and heat transfer within a reactor core. The work includes engineering analyses of thermal-fluid dynamics, clear and thorough documentation of the analyses, as well as interfacing with design teams. An engineer on the team will contribute to the development, qualification, and validation of methods for modeling coolant flow within reactor cores using one-dimensional models, intermediate-fidelity subchannel models, and high-fidelity computational fluid dynamics models.

Requirements

Bachelors, Masters, or PhD in a technical field, such as nuclear, mechanical, or aerospace engineering
Proficiency with thermal fluids (thermal-hydraulics) analysis methods and first principles
Able to write clear and concise documentation
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
Demonstrated success in qualification and validation of analyses
Experience with CI/CD computing environments
Experience with reactor systems codes (RELAP or similar)
Experience with subchannel analysis codes (COBRA-TF or similar)
Experience with high-fidelity computational fluid dynamics analysis

Responsibilities

Modeling core thermal-hydraulic behavior using subchannel codes such as DASSH, MOOSE-Subchannel, or COBRA-TF
Modeling core thermal-hydraulic behavior using one-dimensional systems codes such as SAS4A/SASSYS-1 or RELAP
Modeling core thermal-hydraulic behavior using first principles approaches and in-house flow network models
Modeling core thermal-hydraulic behavior using 3-D computational fluid dynamics
Developing and documenting methods to analyze core thermal-hydraulic behavior at steady-state and during transients
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