复杂裂隙网络内冲击射流脉动压力传播过程数值研究

您当前的位置：

首页 >

文章列表页 >

复杂裂隙网络内冲击射流脉动压力传播过程数值研究

水利与土木工程 | 更新时间：2023-11-28

- 复杂裂隙网络内冲击射流脉动压力传播过程数值研究
- Numerical Study of Fluctuating Pressure Propagation Within Complicated Fracture Network Due to Impinging Jet
- 工程科学与技术 2009年41卷第5期页码：36-41
- 作者机构：
- 作者简介：
- 基金信息：
  
  自然科学基金面上项目（10772015）;自然科学基金重点项目（50539060）;四川大学水力学与山区河流开发保护国家重点实验室开放基金（0405）
- DOI：
  中图分类号：
- 纸质出版日期：2009，
扫描看全文
李爱华,刘沛清,许唯临.复杂裂隙网络内冲击射流脉动压力传播过程数值研究[J].工程科学与技术,2009,41(5):36-41.

Numerical Study of Fluctuating Pressure Propagation Within Complicated Fracture Network Due to Impinging Jet[J]. Advanced Engineering Sciences, 2009,41(5):36-41.
李爱华,刘沛清,许唯临.复杂裂隙网络内冲击射流脉动压力传播过程数值研究[J].工程科学与技术,2009,41(5):36-41. DOI：

Numerical Study of Fluctuating Pressure Propagation Within Complicated Fracture Network Due to Impinging Jet[J]. Advanced Engineering Sciences, 2009,41(5):36-41. DOI：

摘要

中文摘要: 引入高坝下游基岩复杂裂隙网络结构，对裂隙网络内冲击射流脉动压力的传播过程和机理展开数值研究。应用蒙特卡洛方法，建立河床岩体仿真裂隙网络内脉动压力的瞬变流传播模型。数值模拟得出各裂隙线元内的瞬时脉动压力时间过程，以及脉动压力强度的空间分布云图。结论认为：点脉动压力的瞬时分布是各裂隙线元内的压力波传播、反射并叠加的结果，具有显著地各向异性特性。脉动强度基本服从正态分布。频谱分析得出点脉动压力不仅和岩体控制体外部施加的干扰脉动有关，而且和与此点相衔接的线元、以及通过其他线元与此点相贯通的线元的几何、物理特性有关。

Abstract

Abstract:The complicated fracture structure of bed rock was introduced to study the process and mechanism of propagation of fluctuating pressure due to jet impingement downstream of high dams. Applying the Monte Carlo method

the transient model of fluctuating pressure propagation within an imitated rock fracture network was established. The transient time process of pressure fluctuation within each fissure and the special distribution of the intensity of pressure fluctuation were obtained by numerical simulation. It was concluded that the transient distribution of the fluctuating pressure of any node

with typically anisotropy

was the result of the propagating

reflecting and interating of pressure waves within fissure cells. The fluctuating intensity obeyed on the normal distribution. Through the spectrum analyzing

it was verified that the fluctuating pressure of any node not only lied on the pressure forced outside to the control volume

but also were determined by the geometric and physical characters of the fissure cells which are joined with the node or reached it through other cells.

关键词

脉动压力蒙塔卡洛方法裂隙网络瞬变流模型

Keywords

fluctuating pressureMonte Carlo methodfracture networkmodel of transient flow

references

李爱华,刘沛清.岩石河床在冲击水流脉动压力作用下的解体破坏机理[J].水利学报,2007(11)

Liu P Q;Li A H,Fluctuating uplift acting on rock blocks at the bottom of river bed and estimation of the limiting scour depth,Journal of Hydraulic Research IAHR

Alberto Bellin ；Virgilio Fiorotto,Direct Dynamic Force Measurement on Slabs in Spillway Stilling Basins,Journal of Hydraulic Engineering ,1995, 121(10).

刘沛清,挑射水流对岩石河床的冲刷机理,北京:高等教育出版社,2002.

Weilin Xu ；Jun Deng ；Jingxue Qu ；Shanjun Liu ；Wei Wang,Experimental Investigation on Influence of Aeration on Plane Jet Scour,Journal of Hydraulic Engineering ,2004, 130(2).

Liu P Q;Dong J R;Yu C,Experimental investigation of fluctuating uplift on rock blocks at the bottom of the scour pool downstream of Three-Gorges spillway,IAHR Journal of hydraulic research

李爱华,刘沛清.脉动压力在板块缝隙中传播衰变机理研究[J].水利水电技术,2006(9)

Liu Pei-Qing ；Li Ai-Hua,Model Discussion of Pressure Fluctuations Propagation within Lining Slab Joints in Stilling Basins,Journal of Hydraulic Engineering ,2007, 133(6).

李爱华;刘沛清.脉动压力在消力池底板缝隙传播的瞬变流模型和渗流模型统一性探讨[J].水利学报,2005(10)

Mason P J;Arumugam K,Free jet scour below dams and flip buckets,Journal of Hydraulic Engineering,1985(2).

崔广涛;陆荣光;林继镛,关于挑跌流对河床的动水压力及基岩的防护问题,天津大学学报,1982(2).

更多指标>

浏览量

510

下载量

CNKI被引量

文章被引用时，请邮件提醒。

提交

工具集

关联资源

洞塞消能工的脉动压力分析

浅水垫消力池的大涡模拟研究