水下航行器流噪声特性水洞试验研究  

Water-Tunnel Experiment about Flow-Noise Characteristic of Underwater Vehicle

作　　者：黄桥高[1] 潘光[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《西北工业大学学报》2015年第1期141-146,共6页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(51279165);教育部高等学校博士学科点科研基金(20126102110009)资助

摘　　要：在高速水洞中进行了水下航行器流噪声的试验研究,测量了不同头部线型、不同来流速度、不同测试点位置处水下航行器缩比模型的流噪声声压谱特性。试验结果发现,上述因素对模型流噪声均有显著影响:模型头部端面直径越小,头部曲线段越长,其流噪声声压级越小;流噪声声压级随着来流速度的增大而增大;相比头部端面其他位置,驻点处的流噪声声压级最小。同时,运用相似率估算了大尺度航行器的流噪声声压谱,获得了较好的预测值。该研究成果对水下航行器的声学设计具有一定的指导意义。The flow-noise experiments of underwater vehicle were conducted in the NWPU high speed water-tunnel. The flow-noise sound pressure spectrum characteristics of different underwater vehicle models were tested at different flow velocities and different testing point positions. The experimental results and their analysis show prelim- inarily that： （1） the flow-noise of underwater vehicle models was significantly influenced by fore-body linetype, flow velocities and testing point positions; （2） the flow-noise sound pressure level was smaller when the front-sec- tion diameter of fore-body was smaller and the length of fore-body was longer, the flow-noise sound pressure level increased with increasing flow velocity. （3） compared with other positions of the front-section, the flow-noise sound pressure level of the stagnation point was smallest. The flow-noise sound pressure spectra of large scale underwater vehicle were estimated with scaling law and better estimation value was obtained. We believe that the research re- suits in this paper are helpful in the acoustic design of underwater vehicle.

关 键 词：水下航行器 流噪声 水洞试验 相似律 

分 类 号：O357[理学—流体力学]