[1]王诗洋,韩康,唐首祺,等.基于LES和FW-H耦合的水面船舶声场研究[J].应用科技,2018,45(06):22-26.[doi:10.11991/yykj.201805003]
 WANG Shiyang,HAN Kang,TANG Shouqi,et al.Study of the ship acoustic field based on the coupling of LES and FW-H equation[J].Applied science and technology,2018,45(06):22-26.[doi:10.11991/yykj.201805003]
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基于LES和FW-H耦合的水面船舶声场研究(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第45卷
期数:
2018年06期
页码:
22-26
栏目:
船舶与海洋工程
出版日期:
2018-11-05

文章信息/Info

Title:
Study of the ship acoustic field based on the coupling of LES and FW-H equation
作者:
王诗洋1 韩康2 唐首祺2 王文全1
1. 中国船舶工业公司 第七〇八研究所, 上海 200011;
2. 哈尔滨工程大学 船舶工程学院, 黑龙江 哈尔滨 150001
Author(s):
WANG Shiyang1 HAN Kang2 TANG Shouqi2 WANG Wenquan1
1. Marine Design and Research Institute of China, Shanghai 200011, China;
2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
关键词:
噪声水面舰艇大涡模拟FW-H声学模型流噪声流场声场声指向性图
Keywords:
noisesurface shipLESFW-H acoustic modelflow noiseflow fieldsound fieldacoustic directivity map
分类号:
U661.7
DOI:
10.11991/yykj.201805003
文献标志码:
A
摘要:
为了优化舰艇的噪声性能,提升舰艇隐蔽性,针对水面船舶声场进行研究。研究针对某型船,采用计算流体力学(CFD)理论,结合雷诺平均N-S方程并使用大涡模拟(LES)方法进行方程组封闭,对船体流场进行了仿真计算,并与试验结果进行比较,然后加载FW-H声学模型对各航速下船体的流噪声声场进行模拟。流场计算结果显示:各航速下船体阻力的计算值与试验数据吻合度较高;声场计算得到了各监测点在不同频率下的噪声级,分析了不同剖面位置处、不同频率下的声指向性等;通过分析特征点的声压级曲线得出,船体的流噪声主要集中在低频段,噪声衰减速度随频率增大而减小。仿真结果表明,所采用的计算方法能够较为准确地模拟船体的流场和声场,为水面舰艇的流噪声研究提供了一条可行的途径。
Abstract:
In order to optimize noise performance of the ship and improve concealability of the ship, this paper studies the sound field of the ship on the surface of ocean. As for a certain type of ships, this study combined the computational fluid dynamics (CFD) theory with the Reynolds mean N-S equation and used the large eddy simulation (LES) method to make equations closed. The simulation calculation for flow field around the hull was carried out, and the results were compared with the test results. Then the FW-H acoustic model was loaded to simulate flow noise acoustic field of the hull under various speed. As is known from flow field calculation results:the calculated value of hull resistance under different speed agrees well with the test data; get the noise class of monitored spots from acoustic field calculation under different frequencies, and analyze the sound directivity and attenuation of different section location under different frequencies. According to analysis of the sound pressure level (SPL) of characteristic point, it can be derived that the flow noise of hull mainly concentrates in the low-frequency stage, and noise attenuation rate decreases with increase of frequency. Simulation results show that the calculation method adopted in this paper can simulate the flow field and acoustic field accurately, providing a feasible way for studying flow noise of the ship.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-05-03。
基金项目:国家自然科学基金项目(51679052,51639004);国防基础科研计划项目(JCKY2016604B001)
作者简介:王诗洋(1981-),男,高级工程师,博士
通讯作者:王诗洋,E-mail:lansewuyou@sina.com
更新日期/Last Update: 2018-11-02