节径凸起结构对串列双圆柱干涉噪声的影响

王大庆; 仝帆; 冯和英; 王勇; 杨成浩

doi:10.13224/j.cnki.jasp.20210421

节径凸起结构对串列双圆柱干涉噪声的影响

doi: 10.13224/j.cnki.jasp.20210421

王大庆^{1, 2,},
仝帆^1,*, ,,
冯和英²,
王勇¹,
杨成浩²

1.
中国空气动力研究与发展中心气动噪声控制重点实验室，四川绵阳 621000
2.
湖南科技大学机械设备健康维护湖南省重点实验室，湖南湘潭 411201

基金项目: 国家自然科学基金（12102451，51875194，11602290，11802114）

详细信息

作者简介:
王大庆（1996-），男，硕士生，主要从事叶轮机械气动噪声控制研究

通讯作者:
仝帆（1990-），男，高级工程师，博士，主要研究方向为叶轮机械气动声学、仿生降噪技术。E-mail：tongfan@cardc.cn

中图分类号: V211.7；TB535
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出版历程
- 收稿日期: 2021-08-08
- 网络出版日期: 2022-10-27

Influence of pitch diameter protruding structure on interference noise of tandem double cylinders

WANG Daqing^{1, 2
,},
TONG Fan^{1,*
, ,},
FENG Heying²,
WANG Yong¹,
YANG Chenghao²

1.
Key Laboratory of Aerodynamic Noise Control,China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China
2.
Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan Hunan 411201, China

摘要

摘要:
为探究周期性节径凸起结构对串列双圆柱体钝体杆件干涉噪声的降噪效果与降噪规律，在0.55 m×0.4 m声学消声风洞开展了串列双圆柱降噪实验，设计了8种不同参数的周期性节径凸起结构，实验研究了4种不同来流速度（雷诺数为0.4×10⁵～1.6×10⁵）下周期性节径凸起结构对串列双圆柱干涉噪声的影响。研究表明：周期性节径凸起结构可以减弱甚至完全抑制单音峰值噪声的产生，最大峰值噪声降噪量可达近30 dB，总声压级最高降噪量可达18.1 dB。不同工况状态下，各种参数化结构对噪声抑制能力有所不同，均存在最佳值，其中凸起高度为(0.1D～0.15D)、凸起间距为0.5D左右（D为基准圆柱直径）的周期性节径凸起结构在较广工况范围下都具有较好的降噪效果。周期性节径凸起结构的引入，不仅改变了串列双圆柱对应的峰值特征频率和涡脱落频率，而且抑制圆柱杆件卡门涡街的产生。
- 湍流干涉噪声 /
- 节径凸起结构 /
- 串列双圆柱 /
- 峰值噪声 /
- 涡脱频率
Abstract:
In order to explore the noise reduction effect and noise reduction law of the periodic pitch diameter protruding structure on the interference noise of the tandem double cylinders bluff body, noise reduction experiments of tandem double cylinders were carried out in the 0.55 m×0.4 m anechoic wind tunnel. Eight kinds of periodic pitch diameter protruding structures with different parameters were designed, and the noise reduction effects of pitch diameter periodic protruding structure on the interference noise of the tandem double cylinders were tested at four incoming flow velocities (Reynolds number 0.4×10⁵−1.6×10⁵). Experiment results showed that, the tone peak noise can be reduced or even be completely suppressed by the periodic pitch diameter protruding structure. The maximum peak noise reduction can reach nearly 30 dB, and the maximum overall sound pressure level noise reduction can reach 18.1 dB. Under different working conditions, different structures had different noise suppression capability and there was an optimal value for each working condition. Generally speaking, periodic pitch diameter protruding structure with protruding height of (0.1D～0.15D), protruding space of 0.5D has the best noise reduction effect across a wide working condition range. The introduction of periodic pitch diameter protruding structure not only changed the peak characteristic frequency and vortex shedding frequency of tandem double cylinders, but also suppressed the generation of Karman vortex street.
- turbulent interference noise /
- pitch diameter protruding structure /
- tandem double cylinder /
- peak noise /
- vortex shedding frequency

HTML

图 1 全消声室实验装置

Figure 1. Experimental device for full anechoic chamber

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图 2 圆柱周期性节径凸起结构示意图

Figure 2. Schematic diagram of the periodic pitch diameter protruding structure of the cylinder

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图 3 消声风洞背景噪声

Figure 3. Background noise of anechoic wind tunnel

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图 4 单圆柱与串列双圆柱噪声频谱对比（U₀=60 m/s）

Figure 4. Comparison of noise spectrum of single cylinder and tandem double cylinders （U₀=60 m/s）

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图 5 不同来流速度下基准双圆柱噪声频谱特性分析

Figure 5. Analysis of noise spectrum characteristics of reference double cylinders under different incoming flow velocities

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图 6 不同雷诺数条件下对应的瞬时展向涡量云图

Figure 6. Corresponding instantaneous spanwise vorticity cloud images under different Reynolds number conditions

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图 7 不同凸起高度对串列双圆柱干涉噪声的影响

Figure 7. Influence of different protruding heights on the interference noise of tandem double cylinders

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图 8 不同凸起高度对串列双圆柱干涉噪声降噪量的影响

Figure 8. Influence of different protruding heights on the interference noise reduction of tandem double cylinders

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图 9 不同凸起高度的串列双圆柱总声压指向性分布

Figure 9. Overall sound pressure directivity distribution of tandem double cylinders with different protruding heights

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图 10 不同凸起高度的串列双圆柱总声压级与来流速度的关系

Figure 10. Relationship between the overall sound pressure level of tandem double cylinders with different protruding heights and the incoming flow velocity

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图 11 不同凸起高度结构的总声压级降噪量

Figure 11. Overall sound pressure level noise reduction ofdifferent protruding height parameter structures

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图 12 不同凸起高度的串列双圆柱声功率变化（U₀=60 m/s，Re≈1.2×10⁵）

Figure 12. Variation of sound power of tandem doublecylinders with different protruding heights （U₀=60 m/s，Re≈1.2×10⁵）

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图 13 凸起间距对串列双圆柱干涉噪声频谱的影响

Figure 13. Influence of protruding spaces on the interference noise spectrum of tandem double cylinders

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图 14 凸起间距对串列双圆柱干涉噪声降噪量的影响

Figure 14. Influence of protroding spaces on the interference noise reduction of tandem double cylinders

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图 15 不同凸起间距的串列双圆柱远场辐射噪声总声压指向性分布

Figure 15. Overall sound pressure directivity distribution of the far-field radiated noise of tandem double cylinders with different protruding spaces

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图 16 不同凸起间距的串列双圆柱总声压级与来流速度的关系

Figure 16. Relationship between the overall sound pressure level of tandem double cylinders with different protruding spaces and the incoming flow velocity

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图 17 不同凸起间距结构的总声压级降噪量

Figure 17. Overall sound pressure level noise reduction of different protruding space structures

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图 18 不同凸起间距结构的串列双圆柱声功率变化（U=60 m/s，Re≈1.2×10⁵）

Figure 18. Variation of sound power of tandem double cylinders with different protruding space structures（U=60 m/s，Re≈1.2×10⁵）

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表 1 节径凸起结构设计参数

Table 1. Design parameters of pitch diameter protruding structure

序号	名称	基准直径 D/mm	凸起直径 D₀/mm	高度 A/mm	间距 S/mm
1	Baseline	30	30.0	0	0
2	A1.5S9	30	31.5	0.05D	0.3D
3	A3S9	30	33.0	0.1D	0.3D
4	A4.5S9	30	34.5	0.15D	0.3D
5	A6S9	30	36.0	0.2D	0.3D
6	A12S9	30	42.0	0.4D	0.3D
7	A3S4.5	30	33.0	0.1D	0.15D
8	A3S6	30	33.0	0.1D	0.2D
9	A3S15	30	33.0	0.1D	0.5D

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表 2 G.R.A.S 46AE型传声器主要技术指标

Table 2. Main technical specifications of the G.R.A.S microphone type 46AE

参数	数值及说明
类型	46AE
传声器直径/cm	1.27
灵敏度/（mV/Pa）	50
频率响应/Hz	3.15～2×10⁴
频率误差/（dB/Hz）	±3
声压动态响应上限/dB	148
麦克风热噪声/dB（A）	14.5

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表 3 不同凸起高度结构的总声压级

Table 3. Overall sound pressure level of different protruding height parameter structures

结构	L_oasp/dB
结构	U₀=20 m/s	U₀=40 m/s	U₀=60 m/s	U₀=80 m/s
Baseline-Baseline	89.55	107.80	119.96	114.15
A1.5S9-Baseline	87.77	92.73	103.52	110.59
A3S9-Baseline	75.34	91.41	102.50	110.22
A4.5S9-Baseline	75.04	90.80	101.91	109.27
A6S9-Baseline	74.51	94.46	105.44	110.24
A12S9-Baseline	89.70	99.99	113.87	120.46

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表 4 不同凸起间距结构的总声压级

Table 4. Overall sound pressure level value of different protruding space structures

结构	L_oasp/dB
结构	U₀=20 m/s	U₀=40 m/s	U₀=60 m/s	U₀=80 m/s
Baseline-Baseline	89.55	107.80	119.96	114.16
A3S4.5-Baseline	73.25	95.98	114.90	119.05
A3S6-Baseline	73.19	95.38	104.66	110.73
A3S9-Baseline	75.34	91.41	102.50	110.22
A3S15-Baseline	76.31	91.39	102.42	109.85

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