Accurate and Affordable Large-Eddy Simulation for Turbomachinery Flows

Recent computational and numerical developments in Fidelity LES have made large eddy simulations (LES) efficient, accurate, and cost-efficient for turbomachinery applications.

Key developments include:

1. Advances in wall-modeled large-eddy simulation (WMLES) techniques
2. A highly efficient moving mesh solver based on Voronoi diagrams, ideal for turbomachinery flow simulations
3. GPU acceleration for high computational throughput

LES provides more accurate predictions than conventional Reynolds-averaged Navier-Stokes (RANS)-based approaches for complex, turbulent turbomachinery flows involving transition, separation, and rotor-stator interactions. This webinar will showcase the capabilities of Fidelity LES through whole-wheel simulations of a transonic fan stage to predict aerodynamic performance.

Key takeaways:

• Advanced use of LES for turbomachinery flow simulations
• Harnessing the moving mesh capabilities of Fidelity CharLES for whole-wheel full-stage simulations
• Leveraging GPU acceleration to reduce computational cost significantly
• Enabling performance curve sweeps with practical computing resources

Reference:

[1] Kan Wang, Sanjeeb Bose, and Christopher Ivey. GPU-Accelerated Full-Wheel Large-Eddy Simulations of a Transonic Fan Stage. Proceedings of ASME Turbo Expo 2024. June 24-28, 2024, London, UK. GT2024-128238.