基于流固耦合的管道车振动运移水力特性数值模拟与试验  

Numerical simulation and tests for vibration migration hydraulic characteristics of a piped carriage based on fluid-structure interaction

作　　者：张春晋 孙西欢[1,2] 李永业[1] 张学琴 ZHANG Chunjin;SUN Xihuan;LI Yongye;ZHANG Xueqin(School of Hydro Science & Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Jinzhong University,Jinzhong 030600,China;Zhangqiu Yellow River Bureau,Jinan 250200,China)

机构地区：[1]太原理工大学水利科学与工程学院,太原030024 [2]晋中学院,山西晋中030600 [3]章丘黄河河务局,济南250200

出　　处：《振动与冲击》2019年第5期251-258,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(51179116;51109155);山西省自然科学基金项目(2015011067;201701D221137)

摘　　要：鉴于传统运输方式在环境污染与能源危机方面存在的问题,提出了一种新型节能环保的运输方式——筒装料管道水力输送技术。为了进一步分析管道车在平直管段振动运移的水力特性,采用ANSYS Fluent 12.0对管道车结构响应和管道内部流场进行流固耦合数值模拟,其中流场计算采用RNG k-ε紊流模型,结构响应计算采用结构动力学方程。结果表明:模拟值与试验值基本吻合,且相对误差不超过4.8%;管道车在平直管段的瞬时速度在一定范围内呈不规则振动变化,可以将管道车的振动运移视为恒定运动;管道车近壁面流场区域的沿程测压管水头呈"W"型分布规律;管道车运移时平均能耗与管道流量之间呈线性变化趋势。该研究对进一步准确掌握管道车在平直管段振动运移过程中轴向流速与压强的瞬态变化特性具有重要的参考价值。To solve existing problems in environmental pollution and energy crisis for traditional transport modes,a new energy-saving and environment-protecting transport mode called the tube-contained raw material pipeline hydraulic transport technique was proposed.In order to further analyze vibrational migration hydraulic characteristics of a piped carriage in a horizontal straight pipeline,the software ANSYS Fluent 12.0 was used to do numerical simulation with fluid-structure interaction for structural responses of the piped carriage and the pipeline inside flow field.The flow field prediction was calculated with RNG k -ε turbulent model,while structure responses of the piped carriage were computed with structural dynamic equations.The results showed that the simulated values agree well with those of tests,and the relative errors are not larger than 4.8%;the instantaneous speed of the piped carriage in the horizontal straight pipeline reveals irregular vibration changes within a certain range,the vibration migration of the piped carriage can be regarded as a constant motion;the distribution of water head of pressure- measuring pipe in the area near wall of the piped carriage is W-shaped;the average energy loss of the piped carriage during migration is linearly related to the pipeline flow;the study results are valuable for further accurately grasping the transient variation characteristics of axial flow velocity and pressure during the vibrational migration of the piped carriage in a horizontal straight pipeline.

关 键 词：筒装料管道水力输送 流固耦合 水力特性 数值模拟 管道车 

分 类 号：TH137[机械工程—机械制造及自动化] U173.91[交通运输工程]