Flow Tracking in CFD — Lesson 2

This lesson covers the intricate aspects of turbomachinery aerodynamics, focusing on the computational fluid dynamics (CFD) for turbomachines. It delves into the different types of compressors and turbines, the role of CFD as a powerful design tool, and the challenges associated with its use. The lesson also discusses turbulence models, their advantages and disadvantages, and their application in predicting complex 3D flows. It further explores the concept of aero elasticity and the need for efficient grid generation tools. The lesson concludes with a discussion on the future of CFD and its potential improvements.

Video Highlights

03:38 - Explanation of the different types of turbulence models and their advantages and disadvantages.
14:55 - Explanation of the computing requirements for CFD and the challenges associated with it.
27:01 - Discussion on the concept of aero elasticity and the challenges associated with it in CFD.
44:10 - Presentation of case studies on the prediction of secondary flows in turbomachinery using CFD.

Key Takeaways

- Computational Fluid Dynamics (CFD) has emerged as a powerful tool for analyzing engineering systems, especially in the field of turbomachinery aerodynamics.
- Different types of turbulence models exist, each with its own advantages and disadvantages. The choice of model depends on the specific application and flow conditions.
- Aero elasticity, which involves fluid and structure coupling, presents a significant challenge in CFD. This requires a real-time Finite Element Method (FEM)-CFD interface.
- The use of CFD is not without challenges. These include the need for efficient grid generation tools, improved transition models, and real-time aero elastic computations.
- Despite these challenges, CFD holds great promise for the future, with potential improvements in areas such as hybrid turbulence models and aero acoustics and noise predictions.