局部进气高速涡轮机气动噪声实验研究（英文）  

Experimental Study on Aeroacoustics Control for High-speed Partial Admission Turbine

作　　者：赵辛午[1] 黄洪雁[1] 马瑞贤[1] 刘占生[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《科学技术与工程》2015年第34期39-44,共6页Science Technology and Engineering

摘　　要：动静叶干涉所产生的单音离散噪声是涡轮机气动噪声的主要来源之一。对于一种局部进气高速涡轮机,为了减弱由动静叶干涉引起的单音噪声,对涡轮机通流结构进行了流道优化设计以控制流道内的流动状况进而降低气动噪声,设计了涡轮机气动噪声实验台,测量并分析了流道优化措施的降噪效果。测量结果表明,所采用的涡轮机流道优化设计方法有效地抑制了单音离散噪声,降噪量最大达到了7 d B;在多数三分之一倍频程内,涡轮机优化设计后的噪声幅值均低于原始的涡轮机,降噪量最大为2.1 d B。The discrete noise induced by rotor-stator interaction is one of the main sources of turbomachine＇ s aerodynamic noise. For a high-speed partial admission turbine, the fluid path was optimally designed to improve the flow state to control the discrete noise induced by rotor-stator interaction, and the test rig for turbine acoustic measurement was designed. The test rig for turbine acoustic measurement was designed, and the noise reduction performance was measured and analysed for these optimal design methods. The results show that the adopted optimal design methods controlled the distinctive noise significantly, the maximum decrease is about 7 dB. In most 1/3 octaves, the noise amplitude is lower for optimal turbine, and the maximum decrease is 2. 1 dB.

关 键 词：高速涡轮机 单音噪声 动静叶干涉 流道优化 实验研究 

分 类 号：TK14[动力工程及工程热物理—热能工程]