Advanced Fluid Simulation Engineer

Position Overview

Powertech’s Technology Development Team is seeking an Advanced Fluid Simulation Engineer-I to support the development of advanced propulsion systems for military applications. This role focuses on high-fidelity numerical simulation of combustion aerodynamics and turbo machinery, spanning low-speed to high-speed flow regimes. The position supports early-stage technology development (TRL 1–7), from fundamental research through subsystem and prototype demonstration. The ideal candidate will have strong experience in steady and unsteady CFD, Large Eddy Simulation (LES), and multiphysics analysis, contributing to the design and optimization of next-generation propulsion components.

• Perform advanced CFD simulations for combustion aerodynamics and turbo machinery across low-speed and high-speed regimes
• Conduct steady and unsteady flow analyses, including Large Eddy Simulation (LES)
• Execute complex simulations using STAR-CCM+ and ANSYS FLUENT
• Perform thermoacoustic analyses and assess combustion instability risks
• Conduct conjugate heat transfer (CHT) analyses for propulsion and turbo machinery components
• Apply numerical design tools for aerodynamic and turbo machinery analysis and optimization
• Develop and apply data-driven and reduced-order modeling techniques to enhance simulation efficiency and design insight
• Support propulsion technology development from TRL 1 through TRL 7
• Validate simulation results using experimental data and support test planning where required
• Prepare technical reports, design documentation, and presentations for internal and external stakeholders
• Collaborate with multidisciplinary teams including combustion, structures, materials, and systems engineering

• PhD or MS in Aerospace Engineering, Mechanical Engineering, or a related field
• 2–5 years of relevant industry or research experience in CFD, combustion, or turbo machinery simulation
• Strong experience with complex CFD calculations, including steady and unsteady flows
• Hands-on experience with LES modeling, including setup, execution, and post-processing
• Proficiency in STAR-CCM+ and ANSYS FLUENT
• Experience performing thermoacoustics and conjugate heat transfer (CHT) analyses
• Solid understanding of combustion aerodynamics and turbo machinery physics
• Strong analytical, documentation, and technical communication skills

• Experience with propulsion systems for military or defense applications
• Familiarity with high-performance computing (HPC) environments
• Experience applying data-based or machine-learning-assisted simulation techniques
• Background in low-TRL technology maturation and prototype development