Investigation on two-phase flow-induced vibrations of a piping structure with an elbow

作     者：Heng SU Yegao QU Guoxu WANG Zhike PENG Heng SU;Yegao QUt;Guoxu WANG;Zhike PENG

作者机构：State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2022年第43卷第11期

页      面：1657-1674页

核心收录：

学科分类：08[工学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Nos.U2141244,11922208,11932011,and 12121002) the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.2019ZX06004001) the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University of China(No.SL2021ZD104) 

主　　题：slug/bubbly flow flow-induced vibration(FIV) fluid-structure interaction bend pipe 

摘      要：The dynamic behaviors of a horizontal piping structure with an elbow due to the two-phase flow excitation are experimentally *** effects of flow patterns and superficial velocities on the pressure pulsations and vibration responses are evaluated in detail.A strong partition coupling algorithm is used to calculate the flow-induced vibration(FIV)responses of the pipe,and the theoretical values agree well with the experimental *** is found that the lateral and axial vibration responses of the bend pipe are related to the momentum flux of the two-phase flow,and the vibration amplitudes of the pipe increase with an increase in the liquid mass *** vertical vibration responses are strongly affected by the flow pattern,and the maximum response occurs in the transition region from the slug flow to the bubbly ***,the standard deviation(STD)amplitudes of the pipe vibration in three directions increase with an increase in the gas flux for both the slug and bubbly *** blockage of liquid slugs at the elbow section is found to strengthen the vibration amplitude of the bend pipe,and the water-blocking phenomenon disappears as the superficial gas velocity increases.