Acoustic Investigation of Perforated Liners in Gas Turbine Combustors

当前的环境压力要求更高效、更环保的燃烧，同时减少排放和噪音。本项目旨在研究使用钢制穿孔内衬来减弱燃烧噪声和降低燃烧不稳定性，特别是低频成分，这是高效燃烧的主要问题。本项目将通过对一些关键物理变量（如温度、空气速度、孔形状、温度、空气流速）的实验测量和声学理论分析来研究和优化穿孔内衬设计。希望分布和双层衬垫的不同布置组合。其目的是最终降低燃烧噪音和不稳定性，以进一步提高燃烧效率，减少有害气体排放。

The current environmental pressure requires more efficient and greener combustion with less emission and noise. In this project, we aim to study the use of steel perforated liners for attenuating the combustion noise and mitigating combustion instabilities, especially for low frequency components, which is the main problem for efficient combustion.This project will investigate and optimise perforated liner design through both experimental measurements and acoustic theoretical analyses of some key physical variables, such as temperature, air velocity, hole shape, hope distribution and different layout combination of the double liners. It aims to ultimately reduce combustion noise and instability to further improve the combustion efficiency and reduce harmful gas emission.