摘要
目的针对倾斜管道物料输送的流固耦合振动问题建立通用求解算法以解决实际工程问题.方法对具有倾斜角度的物料输送管道建立力学模型,应用力学原理推导了倾斜管道的流固耦合动力学方程;通过无量纲化获得简化形式的振动微分方程;应用有限差分法构造了五点差分格式计算模型,并利用VB语言编制了求解响应分析计算程序.结果通过对不同时刻管道振动图像的对比分析可知,当没有流体流过管道时,管道处于平衡位置,且管道末端纵向位移是0.7 mm;当有流体流动时,管道末端的最大摆动幅度为8 mm,最大振动增量为0.56 mm.由此表明流固耦合现象是引起管道振动的主要原因.结论应用笔者方法可有效解决倾斜管道流固耦合振动问题.
In order to solve practical engineering problems, a general algorithm of fluid-structure interaction （FSI） vibration problems in inclined pipe with conveying material is introduced. A mechanical model of the inclined pipe with conveying material is built. Using this model, the FSI dynamics equations are deduced, which are simplified with the dimensionless method. The finite difference method is used to build a calcula- tion model with five-point difference format. To calculate displacement responses, a computing program is edited with VB language. Comparative analyses for pipeline vibration at different times are carded out. It is found that without fluting of conveying material, the pipeline is in equilibrium and the vertical displacement at the end of pipeline is 0. 7 mm. With conveying material fluting, the maximum vibration amplitude at the end of pipeline is 8 mm, the maximum vibration increment is 0. 56 mm. Results show that FSI phenomenon is the main cause of pipeline vibration and using the suggested method in this paper, the FSI vibration prob- lems of inclined pipeline can be solved efficiently.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2014年第1期147-153,共7页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家十二五科技支撑计划项目(2011BAJ02B05-05)
辽宁省自然科学基金项目(201102181)
辽宁省教育厅基金项目(L2010445)
关键词
倾斜管道
流固耦合
有限差分
物料输送
inclined pipe
FSI
the finite difference method
conveying material
