Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (8): 1140-1147.DOI: 10.12068/j.issn.1005-3026.2020.08.013

• Mechanical Engineering • Previous Articles     Next Articles

Influence of the Throttling Plate Hole Diameter and Flow Rate on the Flow-Induced Noise for Nuclear Level Pipeline

XIE Yi1, Xi Dong1, LIU Jian2, LIU Shuai2   

  1. 1.School of Automotive Engineering, Chongqing University, Chongqing 400044, China; 2. Science and Technology on Reactor System Design Technology Laboratory, Chengdu 610041, China.
  • Received:2019-11-05 Revised:2019-11-05 Online:2020-08-15 Published:2020-08-28
  • Contact: XIE Yi
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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.

Key words: nuclear level pipeline, throttling plate, pipe vibration, radiation noise, throttling hole diameter

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