NUMERICAL SOLUTION OF FLUID-STRUCTURE INTERACTION IN LIQUID-FILLED PIPES BY METHOD OF CHARACTERISTICS

作     者：YANG Chao YI Menglin 

作者机构：College of Mechanical Science and EngineeringHuazhong University of Science and Technology Wuhan 430074 China School of Mechatronic Engineering East China Jiaotong University Nanchang 330013 China College of Mechanical Science and EngineeringHuazhong University of Science and Technology Wuhan 430074. China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2007年第20卷第3期

页      面：44-49页

核心收录：

学科分类：08[工学] 

主　　题：Fluid-structure interaction Method of characteristics Coupling Fluid-filled pipe system Optimization 

摘      要：Fluid-structure interaction （FSI） is essentially a dynamic phenomenon and always exists in fluid-filled pipe system. The four-equation model, which has been proved to be effective to describe and predict the phenomenon of FSI due to friction coupling and Poisson coupling being taken into account, is utilized to describe the FSI of fluid-filled pipe system. Terse compatibility equations are educed by the method of characteristics （MOC） to describe the fluid-filled pipe system. To shorten computing time needed to get the solutions under the condition of keeping accuracy requirement, two steps are adopted, firstly the time step Δt and divided number of the straight pipe are optimized, sec-ondly the mesh spacing Δz close to boundary is subdivided in several submeshes automatically ac-cording to the speed gradient of fluid. The mathematical model and arithmetic are validated by com-parisons between simulation solutions of two straight pipe systems and experiment known from lit-erature.