固液两相混合内流激发管道振动失稳特性研究
Study on Vibration Instability Characteristics of Pipe Conveying Solid-Liquid Two-phase Mixed Internal Flow
周顶昌 1马永奇 2尤云祥 1陈伟 3冯爱春1
作者信息
- 1. 上海交通大学海洋工程国家重点实验室,上海 200240;上海交通大学船舶海洋与建筑工程学院,上海 200240;上海交通大学三亚崖州湾深海科技研究院,三亚 572000
- 2. 海南大学海洋科学与工程学院,海口 570228;海南大学南海海洋资源利用国家重点实验室,海口 570228
- 3. 武汉第二船舶设计研究所,武汉 430205
- 折叠
摘要
该文基于动量守恒原理,引入滑移模型,建立了固液两相混合内流激发提升管振动失稳控制模型.利用简谐微分求积(Harmonic differential quadrature,HDQ)方法求解振动控制方程,分析了均布和非均布网格耦合边界端点平移的网格布置策略对HDQ方法求解精度的影响,结果表明:固液两相流体与单相流体激发的管道振动特性有明显差异;在固支-弹性约束边界条件下,一阶临界流速随着固相颗粒输送浓度和粒径的增加而增加,二阶临界流速反而减小,一、二阶临界频率均增大;输送浓度对临界流速和频率的影响明显,但对颗粒粒径的影响程度十分有限.
Abstract
In this paper,a two-phase solid-liquid mixed internal flow induced vibration instability governing model for the lifting pipe is established,based on the conservation of momentum and the introduction of a slip model.The vibration governing equation is solved using the harmonic differential quadrature(HDQ)method,and the influence of the grid arrangement strategy of homogeneous and non-homogeneous grids coupled with boundary end-point translation on the solution accuracy of the HDQ method is analyzed.The results show that the vibration characteristics of pipes induced by solid-liquid two-phase flow are significantly different from those induced by single-phase flow.Under the clamped-free boundary condition,the first-order critical velocity increases with the solid particle conveying concentration and size increasing,while the second-order critical velocity decreases instead.Both the first and second order critical frequencies increase as conveying concentration and size increases.The effect of conveying concentration on the critical velocity and frequency is significant,with particle size having a very limited degree of influence.
关键词
固液两相/混合内流/管道失稳/简谐微分求积方法/网格布置Key words
Solid-liquid two-phase/Mixed internal flow/Pipe instability/Harmonic differential quadrature method/Grid arrangement引用本文复制引用
基金项目
三亚崖州湾科技城科技专项资助(SCKJ-JYRC-2023-53)
三亚市科技工业信息化局(2022KJCX97)
出版年
2024
NETL
NSTL
万方数据