Introduction to Axial Flow Turbines — Lesson 2

This lesson covers the fundamental aspects of Turbomachinery Aerodynamics, focusing on the analysis and design of different types of turbo machines, particularly compressors and turbines. It delves into the two-dimensional analysis of axial compressors and turbines, explaining the similarities and differences between them. The lesson also discusses the construction of velocity triangles for both compressors and turbines, highlighting the importance of understanding these constructions for analyzing the performance of these machines. It further explains the concept of cascade analysis, which is crucial for the design of turbo machines. The lesson concludes with a discussion on the calculation of lift and drag for turbine configurations and how this information can be used to calculate blade efficiency.

Video Highlights

02:56 - Discussion on the different types of compressors and turbines, and how they are similar and different.
17:04 - Discussion on the velocity triangles of a typical turbine stage and how they can be used to understand the operation of the turbine.
22:23 - Explanation of the concept of stage work ratio and how it can be used to understand the performance of a turbine.
40:14 - Discussion on the concept of cascade analysis and how it can be used to analyze the performance of turbines.
52:24 - Explanation of the calculation of lift and drag for a turbine cascade and how it can be used to calculate the blade efficiency.

Key Takeaways

- Turbomachinery Aerodynamics involves the analysis and design of different types of turbo machines, with a focus on compressors and turbines.
- Two-dimensional analysis of axial compressors and turbines reveals their operational similarities and differences.
- Velocity triangles are essential tools for analyzing the performance of compressors and turbines.
- Cascade analysis is a fundamental aspect of turbo machine design.
- Calculating lift and drag for turbine configurations allows for the determination of blade efficiency.