| 节流板孔直径及流量对核级管道流致噪声的影响 |
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| 引用本文： | 谢翌,奚冬,刘建,刘帅. 节流板孔直径及流量对核级管道流致噪声的影响[J]. 东北大学学报(自然科学版), 2020, 41(8): 1140-1147. DOI: 10.12068/j.issn.1005-3026.2020.08.013 |
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| 作者姓名： | 谢翌 奚冬 刘建 刘帅 |
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| 作者单位： | (1.重庆大学 汽车工程学院, 重庆400044; 2.核反应堆系统设计技术重点实验室, 四川 成都610041) |
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| 基金项目： | 国家自然科学基金资助项目(51606180); 核反应堆系统设计技术重点实验室基金资助项目(HT-KFKT-02-2017004). |
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| 摘 要： | 建立了核级节流管道的流动-振动-辐射噪声仿真模型,并基于实验和仿真研究了辐射噪声产生的机理及节流孔径和来流流量对振动噪声的影响规律. 节流管道的噪声受节流管道流场中流体尾迹涡的影响:流体在管壁上产生周期性的激振力,且激振力的频率与管道模态所对应的频率相近,从而加剧了振动,导致辐射噪声的产生. 此外,随着节流孔直径的增加,节流管道的振动及辐射噪声逐渐减小;随着来流流量的增加,节流管道振动以及辐射噪声逐渐增大.
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| 关 键 词： | 核级管道 节流板 管道振动 辐射噪声 节流孔直径 |
| 收稿时间： | 2019-11-05 |
| 修稿时间： | 2019-11-05 |
Influence of the Throttling Plate Hole Diameter and Flow Rate on the Flow-Induced Noise for Nuclear Level Pipeline |
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| XIE Yi,Xi Dong,LIU Jian,LIU Shuai. Influence of the Throttling Plate Hole Diameter and Flow Rate on the Flow-Induced Noise for Nuclear Level Pipeline[J]. Journal of Northeastern University(Natural Science), 2020, 41(8): 1140-1147. DOI: 10.12068/j.issn.1005-3026.2020.08.013 |
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| Authors: | XIE Yi Xi Dong LIU Jian LIU Shuai |
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| Affiliation: | 1.School of Automotive Engineering, Chongqing University, Chongqing 400044, China; 2. Science and Technology on Reactor System Design Technology Laboratory, Chengdu 610041, China. |
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| Abstract: | The simulation model of flow-vibration-radiation noise was established for the throttling pipe used in the nuclear reactor. The mechanism of generating radiation noise and the influence of throttling hole diameter and flow rate on the vibration and noise were studied by the experiment and simulation. The radiation noise generates because of the wake vortices in the flow field of throttling pipe. When the frequency of the periodically exciting force generated on the pipe wall by the fluid in the pipe approaches that of the corresponding pipe modal, the vibration is enhanced, resulting in the radiation noise. Moreover, the vibration and radiation noise reduce with the increase of the throttling hole diameter, and enhance with the increase of the inlet flow rate. |
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| Keywords: | nuclear level pipeline throttling plate pipe vibration radiation noise throttling hole diameter |
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