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Data Acquisition Protocol for Determining Embedded Sensitivity Functions
Published on: April 20, 2016
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A computational study of trailing edge noise suppression with embedded structural compliance.
Irsalan Arif1, Randolph C K Leung1, Muhammad Rehan Naseer1
1Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China irsalan.arif@connect.polyu.hk, mmrleung@polyu.edu.hk, rehan.naseer@connect.polyu.hk.
JASA Express Letters
|March 1, 2023
Summary
A novel structural compliance system with elastic panels effectively suppresses trailing edge noise in low Reynolds number flows by absorbing flow fluctuations. This innovative approach significantly reduces noise scattering compared to existing methods.
Area of Science:
- Fluid Dynamics
- Acoustics
- Structural Mechanics
Background:
- Trailing edge noise scattering is a significant issue in low Reynolds number flows.
- Existing noise reduction methods have limitations.
Purpose of the Study:
- To propose and investigate a unique concept for suppressing trailing edge noise scattering.
- To leverage structural compliance and panel resonance for noise absorption.
Main Methods:
- Development of a structural compliance system with elastic panels.
- High-fidelity direct aeroacoustic simulation.
- Spatiotemporal aeroacoustic-structural interaction analysis.
Main Results:
- The proposed concept effectively absorbs broadband flow and acoustic fluctuation energy.
- The system promotes panel structural resonance for noise absorption.
- The approach is confirmed to be feasible.
Conclusions:
- The novel concept offers a viable solution for trailing edge noise suppression.
- This method outperforms existing trailing edge noise reduction techniques.
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