连续式跨声速风洞试验段降噪技术

陈吉明; 吕金磊; 廖达雄; 吴盛豪; 裴海涛; 史志伟

doi:10.13224/j.cnki.jasp.20200375

连续式跨声速风洞试验段降噪技术

doi: 10.13224/j.cnki.jasp.20200375

1. 南京航空航天大学航空学院非定常空气动力学与流动控制工业和信息化部重点实验室, 南京 210016;
2. 中国空气动力研究与发展中心设备设计及测试技术研究所, 四川绵阳 621000

基金项目:

国家自然科学基金（51936010）；江苏高校优势学科建设工程资助项目

详细信息

作者简介:
陈吉明(1975-),男,副研究员,硕士,主要研究方向为实验流体力学、风洞气动设计及流动控制。

通讯作者:
吕金磊(1980-),男,高级工程师,硕士,主要研究方向为气动声学、风洞噪声与振动控制。E-mall:lvjinlei@cardc.cn

中图分类号: V211.74
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- 被引次数: 0
出版历程
- 收稿日期: 2020-09-05
- 刊出日期: 2021-08-28

Noise reduction technology in test section of continuous transonic wind tunnel

1. Key Laboratory of Unsteady Aerodynamics and Flow Control of Ministry of Industry and Information Technology, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Facilitiy Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

摘要

摘要: 利用中国空气动力研究与发展中心（CARDC） 0.6 m连续式跨声速风洞试验平台，分析了试验段噪声源产生及回路传播的机理，对压缩机尾罩和第四拐角段进行声学处理以降低来流噪声，并采用风洞二喉道节流状态运行抑制试验段下游噪声的前传，有效屏蔽了回路噪声对试验段的影响。据此开展了试验段不同通气壁型式、不同设计参数的主动降噪方案优化设计及其对比试验研究，获取了较优的试验段壁板设计方案，最终实现了风洞试验段气流压力脉动系数低于0.8%的噪声设计指标要求。
- 连续式风洞 /
- 跨声速风洞 /
- 槽壁试验段 /
- 噪声 /
- 降噪实验
Abstract: According to the acoustic experimental conducted in the 0. 6m continuous transonic wind tunnel of CARDC(China Aerodynamics Research and DevelopmentCenter), the noise generation process in test section and the propagation process in tunnel circuit were researched. Acoustic treatments were performed on both the compressor rear cone and the fourth corner to prevent the emitted noise from propagating forward. Meanwhile the wind tunnel was running with second throat throttling to suppress the downstream noise. With those effective means to reduce the circuit noise, the optimization design of active noise reduction schemes with different ventilation wall types and different design parameters was carried out, then an excellent design for the test section wall was achieved. The wind tunnel pressure fluctuation coefficient reached the target of less than 0. 8%,the advanced international level.
- continuous wind tunnel /
- transonic wind tunnel /
- noise /
- slotted test section /
- noise reduction test

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参考文献(20)

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