气液两相流下L型管道非线性动力学与抑振设计研究

贾程; 邢浩然; 王强; 杨宝山; 马越; 李民强; 刘胡杨; 王磊恒; 代胡亮

doi:10.21656/1000-0887.460098

气液两相流下L型管道非线性动力学与抑振设计研究

doi: 10.21656/1000-0887.460098

1.
华中科技大学航空航天学院, 武汉 430074
2.
中国石油化工股份有限公司胜利油田分公司海洋采油厂, 山东东营 257000

(我刊青年编委代胡亮来稿)

基金项目:

国家自然科学基金 12272140

国家自然科学基金 12322201

详细信息

作者简介:
贾程(2002—)，男，硕士生(E-mail: m202472047@hust.edu.cn)

通讯作者:
代胡亮(1986—)，男，教授，博士生导师(通信作者. E-mail: daihulianglx@hust.edu.cn)

中图分类号: O359
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- 被引次数: 0
出版历程
- 收稿日期: 2025-05-16
- 修回日期: 2025-06-17
- 刊出日期: 2026-03-01

Nonlinear Dynamics and Vibration Suppression of L-Shaped Pipes Conveying 2-Phase Flow

1.
School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, P.R.China
2.
Offshore Oil Production Plant of Shengli Oilfield Branch of China Petroleum & Chemical Corporation, Dongying, Shandong 257000, P.R.China

(Contributed by DAI Huliang, M.AMM Youth Editorial Board)

摘要

摘要: 本文考虑均匀气泡流两相流动特性，采用绝对节点坐标描述法，基于Euler-Lagrange方程，建立了输送两相流体时L型悬臂管道的非线性动力学理论模型. 首先，将基于理论模型计算得到的静变形结果与有限元法进行了对比验证，并分析了气体体积分数对管道静变形和稳定性的影响. 然后，研究了在不同空泡份额下，管道随液体流速增大发生的非线性动力学行为，着重研究了空泡份额对管道动态分岔特性的影响. 最后，提出了抑制管道振动的最优支承设计，使得L型管道振动位移和应变幅值达到最小.
- 两相流 /
- 空泡份额 /
- L型悬臂管道 /
- 最优支承位置
Abstract: Based on the Euler-Lagrange equations, the absolute nodal coordinate formulation (ANCF) was employed to establish a nonlinear dynamic model for cantilevered L-shaped pipes conveying 2-phase flow. The characteristics of uniformly bubbly 2-phase flow were considered. Firstly, the static deformation results from the theoretical model were compared and validated against the finite element method (FEM), and the effects of the gas volume fraction on pipe static deformation and stability were analyzed. Then, the nonlinear dynamic behaviors of the pipe were studied for different void fractions, with a focus on the effects of void fractions on bifurcation characteristics. Finally, an optimal support design is proposed to suppress pipe vibrations, and minimize both the displacement and strain amplitudes of the L-shaped pipe.
- 2-phase flow /
- void fraction /
- L-shaped cantilever pipe /
- optimal support position
edited-by

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注释:

1) (我刊青年编委代胡亮来稿)

HTML全文

图 1 管道模型示意图及建模方法

Figure 1. Schematic of the pipe configuration and modeling method

下载: 全尺寸图片幻灯片

图 2 当x_G=0.5时，L型悬臂管道不同流速下变形位移对比图(左图)和FEM计算总位移云图(右图)

注为了解释图中的颜色，读者可以参考本文的电子网页版本，后同.

Figure 2. Comparison diagrams for deformation displacements of the L-shaped cantilevered pipe for x_G=0.5 (left image) and total displacements with the FEM (right image)

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图 3 L型悬臂管道的临界流速和空隙率随气体体积分数的变化曲线

Figure 3. Variations of the critical flow velocity and the void ratio for the L-shaped cantilevered pipe with the gas volume fraction

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图 4 L型悬臂管道自由端X和Y方向的全局坐标随液相流速变化分岔图

Figure 4. The bifurcation diagrams of global coordinates varing with the liquid phase flow rate for the free end in X and Y directions of the L-shaped cantilevered pipe

下载: 全尺寸图片幻灯片

图 5 简支支承安装位置示意图

Figure 5. Schematic diagram for different installation positions of simple supports

下载: 全尺寸图片幻灯片

图 6 液相流速U_L=12 m/s时，不同支承位置情况下管道沿轴向屈曲变形的总位移

Figure 6. Total displacements of the buckling deformation for the pipe along the axis with different positions of supports for U_L=12 m/s

下载: 全尺寸图片幻灯片

图 7 不同支承位置下管道屈曲变形总位移幅值随液相流速U_L的变化曲线

Figure 7. Total displacements of the buckling deformation with increasing U_L for the pipe with different positions of supports

下载: 全尺寸图片幻灯片

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