Secondary Air Systems & Whole Engine Models - Engineer II EDGE Group PJSC

Key Responsibilities

Whole Engine Modeling (WEM)

• Develop 2D axisymmetric thermo-mechanical whole engine models for various aircraft propulsion applications, capturing transient thermal behavior and rotor-stator interactions across full operational scenarios.
• Translate complex 3D gas turbine geometry into efficient 2D simulation domains, accounting for both axisymmetric and non-axisymmetric features (e.g., flanges, ports, blades etc..).
• Incorporate mission profiles (e.g., startup, loading, cooldown, restart) and evolving boundary conditions into transient simulations.
• Use the WEM as a digital twin to evaluate component temperatures, thermal gradients, displacements, and clearances over time.
• Provide critical inputs to structural teams for 3D mechanical movement analysis (e.g., ovality, distortion, lifetime evaluations).
• Participate in the test campaigns to validate findings and update whole engine models accordingly.

Secondary Air Systems (SAS)

• Build and validate 1D SAS networks including internal air paths, cooling flows, leakage paths, and cavities.
• Integrate SAS with WEM to account for convective heat transfer and flow behavior throughout transient engine cycles.
• Use CFD, empirical data, and in-house correlations to inform heat transfer coefficients and boundary conditions across components such as combustors, turbines, compressors, secondary air systems and auxiliaries.

Cross-Functional Collaboration

• Act as the interface between thermal, mechanical, design, CFD, performance, and clearance teams, gathering input for model setup (geometry, materials, operational cycles, heat transfer, etc.).
• Embed WEM and SAS outputs into decision-making workflows, especially for evaluating mechanical integrity, component lifetime evaluation, and clearance control.

Simulation Tools & Process Development

• Benchmark and implement tools such as ANSYS, NX Thermal, Thermal Desktop, AxStream, or similar for thermal and fluid-structure simulation.
• Automate model setup and boundary condition control using scripting (Python, Fortran, MATLAB).
• Develop user-friendly workflows and conditional modeling approaches (e.g., if/then logic for boundary conditions) to capture complex physics during engine transients.

Documentation

• Maintain detailed documentation, including input mapping, assumptions, model validation results, and transient simulation outcomes.
• Author detailed technical reports and support the company s intellectual property development.
• Provide training and guidance on model usage across the organization.