Turbulence-Induced Tube Vibration by Parallel Air-Water Two-Phase Jet Flow
Turbulence-Induced Tube Vibration by Parallel Air-Water Two-Phase Jet Flow
复制标题
平行空气-水两相射流引起的湍流引起的管振动
DOI：
10.1299/jsmec.43.1
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
A. Yasuo
中科院分区：
文献类型：
--
作者：
K. Kawamura;A. Yasuo
在许多管壳式换热器(如蒸汽发生器)中，挡板以适当的间隔放置以支撑换热管。在换热器中，二次冷却剂以射流的形式流经折流板的流孔喷嘴等通道，并与管束平行流动。这种湍流会引起振动，这可能会导致管道的微动磨损和疲劳。本文通过实验研究了管子在气液两相流中振动的基本特性，以评价射流对振动管的流体动力质量、阻尼比、激振力和含气率之间关系的影响。
In many shell and tube heat exchangers such as steam generators, baffle plates are located at appropriate intervals to support the heat transfer tubes. In the heat exchangers, the secondary coolant streams through the channels such as the flow hole nozzles of the baffle plates in the form of jets, and flows in parallel with the tube bundle. This turbulence induces vibrations which could cause fretting wear and fatigue of the tubes. In this paper, basic characteristics of tube vibration were experimentally investigated in air-water two phase flow to evaluate the jet effect on the relationships between hydrodynamic mass, damping ratio, and excitation force on a vibrating tube and void fractions.