Experimental and Numerical Study on Pressure Pulsations Under Various Acoustic Boundary Conditions in Piping Systems

被引：4
作者：
Maekawa, Akira [1 ,2 ]
Tsuji, Takashi [2 ]
Noda, Michiyasu [2 ]
Takahashi, Tsuneo [1 ,5 ]
Kato, Minoru [3 ]
Fujita, Katsuhisa [4 ]
机构：
[1] Inst Nucl Safety Syst Inc, 64 Sata, Mihama, Fukui 9191205, Japan
[2] Kansai Elect Power Co Inc, 13-8 Goichi, Mihama, Fukui 9191141, Japan
[3] Kobelco Res Inst Inc, Nishi Ku, 1-5-5 Takatsukadai, Kobe, Hyogo 6512271, Japan
[4] Osaka City Univ, Dept Mech Engn, Sumiyoshi Ku, 3-3-138 Sugimoto, Osaka 5588585, Japan
[5] Kawasaki Heavy Ind Co Ltd, Chuo Ku, 3-1-1 Higashikawasaki Cho, Kobe, Hyogo 6508670, Japan
来源：
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 2017年 / 139卷 / 02期
关键词：
pressure pulsations; acoustic resonance; piping vibration; mock-up experiment; numerical simulation; sensitivity analysis; boundary condition; valve opening ratio; small bore piping; RESONANT AMPLITUDES; PIPELINES;
D O I：
10.1115/1.4035698
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
To improve design and troubleshooting techniques of piping systems for operating power plants, it is necessary to investigate, by experiment and simulation, the behavior of fluid inside the piping system in detail. This study was conducted using full-scale piping system under conditions that could seriously threaten the plant operation, by matching pressure pulsations, acoustic resonance, and piping natural frequency. Although piping vibration is reported to influence fluid pressure pulsations, there were no such examples of influence in this experiment. Knowing that the opening ratio of the pressure control valve affects the boundary condition for acoustic resonance, experiment and simulation at different opening ratios were conducted. It has been suggested that the cases in which a valve partially open at 25% or less should not be taken as a closed end. This finding conflicts with such a widespread design assumption.
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页数：10
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