孔群是目前水下航行体通流口较为青睐的开口形式，主要目的是降低开口流动激励及噪声。为了研究孔群流动激励特性及其主要参数对流激噪声的影响，借助自航模试验平台对孔群模型进行了流激噪声试验。试验模型包括无孔模型、长圆孔群模型、圆孔群模型等，试验获得了孔群流动激励特性，以及孔群形式、尺寸等对流激噪声的影响程度。试验研究表明，孔群主要导致低频段流动激励恶化，且存在低频特征线谱，圆孔群流动激励优于长圆孔群；减小孔群单孔尺寸，有利于抑制线谱及宽带流动激励。
Hole group is currently the preferred opening form of the flow passage of underwater vehicles. Its main purpose is to reduce the flow excitation and noise of the opening. In order to study the flow excitation characteristics of the hole group and the influence of its main parameters on the flow-induced noise, an experimental study was carried out on the hole group models by the self-navigation model test platform. The test models consist of non-hole model, long circular hole group model, circular hole group model, etc. The flow excitation of the hole groups, as well as the degree of influence of the hole form or the hole size on the flow-induced noise. The experimental research shows that the holes mainly leads to deterioration of flow excitation in low frequency section.The flow excitation includes low frequency line spectrum. The flow excitation of the circular hole group is weaker than the long circular hole group. Reducing the single hole size of the hole group is beneficial to inhibiting line spectrum and broadband flow excitation.
2021,43(9): 44-47 收稿日期：2020-10-09
DOI：10.3404/j.issn.1672-7649.2021.09.008
分类号：U661.1
作者简介：刘继明(1989-)，男，工程师，研究方向为水下航行体性能及水动力噪声
参考文献：
[1] ROSSITER J E. Wind-tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds[M]. [S.l.]: H-m Stalionery office, 1964: 68−91.
[2] 何祚镛. 水流引起突出流线型柱腔共振的试验研究[J]. 哈尔滨船舶工程学院学报, 1993, 14(1): 48–58
[3] 朱习剑, 何祚镛. 水洞中突出矩形腔的流激驻波振荡研究[J]. 哈尔滨船舶工程学院学报, 1993, 14(4): 41–52
[4] 朱习剑, 衣云峰, 何祚镛. 突出腔的激励振荡激励源[J]. 哈尔滨船舶工程学院学报, 1994, 15(1): 26–36
[5] 张明敏, 何祚镛. 导流板对腔口流体自持振动影响的研究[J]. 应用力学学报, 1995, 12(2): 9–16
[6] 张明敏, 何祚镛. 有限长开口圆柱薄壳声辐射计算的新方法[J]. 哈尔滨工程大学学报, 1996, 17(2): 42–50
[7] 罗柏华, 胡章伟, 戴昌晖. 声激励抑制空腔流激振荡的实验研究[J]. 南京航空航天大学学报, 1999, 31(1): 1–5
[8] 袁国清. 水下开孔腔体流噪声机理研究[D]. 上海: 上海交通大学, 2015.
[9] 俞孟萨, 张铮铮, 高岩. 开口与空腔流激声共振及声辐射研究综述[J]. 船舶力学, 2015, 19(11): 1422–1430
[10] 李环, 刘聪尉, 吴方良, 等. 水动力噪声计算方法综述[J]. 中国舰船研究, 2016, 11(2): 72–89
[11] 高岩, 沈琪, 俞孟萨. 弹性腔流激耦合共振及声辐射机理研究[J]. 船舶力学, 2016, 20(8): 1036–1043
[12] 张翰钦, 孙国仓, 郑国垠, 等. 水下开孔结构流激振荡频率特性分析[J]. 浙江大学学报(工学版), 2017, 51(2): 350–357
