Axial Flow Compressors and Noise Regulation — Lesson 8

This lesson covers the intricate details of axial flow compressors, their designs, and the noise they generate. It delves into the aerodynamic theories and principles used in creating and designing axial flow compressors, blades, rotors, and stators. The lesson also highlights the issue of noise regulation in the context of axial flow compressors and fans used in turbo fans. It explains how the noise generated by these components has become a significant problem, leading to stringent regulations worldwide. The lesson further discusses the impact of noise on compressor and fan design, and the measures taken to contain this noise.

Video Highlights

05:14 - Explanation of the importance of conforming to noise regulations for the commercial acceptance and certification of compressors.
10:25 - Discussion on the impact of blade speed on noise levels and the need for noise containment or suppression methodsy .
33:24 - Explanation of the interaction between rotor and stator in creating noise and the impact of the spacing between them on noise levels.
43:40 - Discussion on the noise attenuation or acoustic treatment methods used to reduce noise levels.

Key Takeaways

- Axial flow compressors and their designs are based on various aerodynamic theories and principles.
- Noise generated by axial flow compressors and fans in turbo fans has become a significant issue, leading to stringent regulations worldwide.
- The noise generated by these components has impacted how compressors and fans are designed.
- The noise is strongly related to the velocity or the Mach number with which the flow is passing through the compressors.
- Noise containment measures include design modifications and specific containment methodologies.