Silencing the screech tone - noise suppression in supersonic jets

消除刺耳声 - 超音速喷气式飞机的噪声抑制

• 批准号: DP150101726
• 负责人: A/Prof Daniel Edgington-Mitchell
• 金额: $ 18.37万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-04-01 至 2018-12-21
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP150101726
• 关键词: Silencing; screech; tone; noise; suppression

The focus of this research is to further develop understanding of the fundamental mechanics of the aeroacoustic phenomenon known as screech. From this deeper understanding a range of tailored control mechanisms are expected to be developed to reduce or eliminate the effects of screech in the engines of high-speed aircraft. The research builds on existing expertise and established experimental facilities. As well as an improved understanding of fundamental mechanism, the expected outcomes of the research are more efficient active and passive flow control devices for the reduction of supersonic jet noise.

这项研究的重点是进一步发展被称为尖叫声的航空声学现象的基本力学的理解。从这一更深入的了解，一系列定制的控制机制，预计将被开发，以减少或消除尖叫的影响，在高速飞机的发动机。这项研究建立在现有的专门知识和已建立的实验设施的基础上。除了提高对基本机理的理解外，研究的预期成果是更有效的主动和被动流动控制装置，用于降低超声速射流噪声。