考虑流固耦合的输水管道水锤不确定性及管道风险分析

大坝与安全 ›› 2022 ›› Issue (6): 27-.

考虑流固耦合的输水管道水锤不确定性及管道风险分析

吕国亮

华东工程咨询有限公司，浙江杭州，310014

收稿日期:2022-06-30 修回日期:2022-09-14 出版日期:2022-12-08 发布日期:2023-01-16
作者简介:吕国亮（1968— ），男，湖北麻城人，高级工程师，注册监理工程师，从事施工监理工作。

Uncertainty analysis of water hammer with fluid-structure interaction and the risk of water conveyance pipe#br#

LYU Guoliang

Zhejiang Huadong Engineering Consulting Co., Ltd.

Received:2022-06-30 Revised:2022-09-14 Online:2022-12-08 Published:2023-01-16

摘要/Abstract

摘要： 在水锤荷载作用下，输水系统流体-结构相互作用即流固耦合现象明显，考虑流固耦合情况下水锤不确定性情况复杂，有必要分析其不确定性。首先采用四方程模型模拟确定的流固耦合条件，并采用有限体积法求解。通过实验结果与数值结果对比，验证模型分析正确性和有限体积法求解适用性。基于此考虑管道参数和流体参数的不确定性，通过研究，得到考虑流固耦合的水锤分布规律及安全裕度。其次采用蒙特卡洛法模拟了输水系统风险，明确耦合水锤是输水系统失效主要原因，得出风险值精确度与计算次数密切相关。分析成果可为实际设计提供理论支持。

关键词: 水锤, 不确定性, 管道流, 流固耦合

Abstract: With the effect of water hammer, the fluid-structure interaction in the water delivery system is obvious, and the uncertainty of the coupled water hammer is complex, so it is necessary to analyze the uncertainty. First, deterministic analysis of coupled water hammer using fluid-structure interaction (FSI) 4 equation model as well as the finite volume method (FVM) are used. By comparing the experimental results with the numerical results, the validity of verification model analysis and the applicability of the finite volume method are demonstrated. Combined with the uncertainties of pipeline parameters and fluid parameters, the coupled water hammer uncertainty is studied, and the distribution law of coupled water hammer and a more suitable safety margin are revealed. Second, the risk of water delivery system is simulated by Monte Carlo method, it is clear that coupled water hammer is the main reason for the failure of water delivery system, and it is pointed out that the accuracy of the obtained risk value is closely related to the number of simulations. The analysis results can provide theoretical support for the actual design.

Key words: water hammer, uncertainty, pipe flow, fluid-structure interaction

中图分类号:

TV732.4+1

吕国亮. 考虑流固耦合的输水管道水锤不确定性及管道风险分析[J]. 大坝与安全, 2022, 0(6): 27-.

LYU Guoliang. Uncertainty analysis of water hammer with fluid-structure interaction and the risk of water conveyance pipe#br#[J]. Dam & Safety, 2022, 0(6): 27-.

参考文献

[1] 郭强,王长新.泵站出水管道水锤风险分析[J].水利规划与设计,2016(8):42-48.
[2] 郭文铸,索丽生.简单管水击随机分析[J].水力发电学报,1996,15(4):72-81.
[3] 张芹芬.水电站水击与调压室涌浪的随机分析[D].南京:河海大学,1998.
[4] A. S. Tijsseling.An overview of fluid-structure interaction experiments in single-elbow pipe systems[J].Journal of Zhejiang University-SCIENCE A,2019,20:233-242.
[5] Li G L,Du S C,Huang D L,et al.Elastic mechanics-based fixturing scheme optimization of variable stiffness structure work pieces for surface quality improvement[J].Precision Engineering,2019,56:343-363.
[6] S. Barraza-Lopez,A. A. P. Sanjuan,Z F Wang,et al.Strain-engineering of graphene's electronic structure beyond continuum elasticity[J].Solid State Communications,2013,166:70-75.
[7] 晋良海,姜桂莲,易小钰,等.长距离管道水毁灾害风险的半结构化评价研究[J].人民长江,2021,52(1):13-19.
[8] 徐芝纶.弹性力学（第四版）[M].北京:高等教育出版社,2006.
[9] L. Ramírez,X. Nogueira,P. OURO,et al.A Higher- Order Chimera Method for Finite Volume Schemes[J].Archives of Computational Methods in Engineering,2018,25:691-706.
[10] Hwang Y H,Chung N M.A fast Godunov method for the water-hammer problem[J].International Journal for Numerical Methods in Fluids,2002,40:799-819.
[11] A. S. Tijsseling,A. E.Vardy.20 years of FSI experiments in Dundee[C].Proceedings of the Third M.I.T. Conference on
Computational Fluid and Solid Mechanics,2005:1-8.
[12] 杨惠莲,张涛.误差理论与数据处理[M].天津:天津大学出版社,1992.
[13] 王长新.施工导流风险分析与计算[D].南京:河海大学,1995.
[14] 赵国藩.工程结构可靠性理论与应用[M].大连:大连理工大学出版社,1996.
[15] 韩俊杰,黄迪文,汪海超,等.横穿滑坡天然气管道失效机制研究[J].人民长江,2022(1):209-215.
[16] 刘恒,宋轩,耿雷华,等.南水北调中线交叉建筑物洪水风险估算模型研究[J].人民长江,2010,41(8):74-77.