根据反向建模的附加方程,定位管道中的泄漏
Chang Chang1, Xiangli Li1, Lin Duanmu1
1Institute of Building Environment and Facility Engineering, Dalian University of Technology, Dalian 116024, China.
Heliyon
|June 29, 2023
概括
本研究介绍了一种辅助方法,用于使用分析逆向建模精确定位管道泄漏. 开发的分析解决方案能够准确且快速地识别管道中的泄漏位置.
科学领域:
- 流体动力学 流体动力学
- 管道工程 管道工程是指管道工程.
- 反向问题是反向的问题.
背景情况:
- 管道完整性对于安全高效的流体运输至关重要.
- 准确的泄漏检测对于防止环境损害和经济损失至关重要.
- 现有的方法可能缺乏复杂系统所需的精度或速度.
研究的目的:
- 开发一种用于定位单相流体管道中潜在泄漏的辅助方法.
- 为了获得精确的泄漏定位的分析解决方案.
- 为工程应用提供一种新的方法,包括双相流系统.
主要方法:
- 建立了一个附加方程,该方程基于对单流体相的过渡流的规律方程.
- 使用反向辅助理论和灵敏度分析.
- 导出了一个半无限域管道的反向过渡连接方程,并应用拉普拉斯法用于分析解决方案.
主要成果:
- 分析解决方案准确而快速地确定管道泄漏位置.
- 实验验证证证实了开发的方法的有效性.
- 该方法显示了复杂管道网络中更广泛应用的潜力.
结论:
- 附加方法为管道泄漏局部化提供了有效的工具.
- 分析解决方案在泄漏检测的准确性和速度方面取得了显著的进步.
- 这项研究为复杂工程系统的泄漏检测开辟了新的途径.
相关概念视频
Pipe Flowrate Measurement: Problem Solving
584
A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is...
584
Application of the Linear Momentum Equation
102
The application of the linear momentum equation can be used to analyze the forces needed to hold a 180-degree pipe bend in place with flowing water. In this case, water flows through the bend with a constant cross-sectional area of 0.01 square meters and a flow velocity of 15 meters per second. The pressure at the entrance is 0.2 Megapascals and the pressure at the exit is 0.16 Megapascals.
The goal is to determine the force components in the x and y directions to hold the pipe in place. Since...
The goal is to determine the force components in the x and y directions to hold the pipe in place. Since...
102
Eulerian and Lagrangian Flow Descriptions
1.5K
Fluid flow analysis is critical in many scientific and engineering disciplines, and two principal approaches are used to describe this flow: the Eulerian and Lagrangian methods. These methods offer different perspectives on monitoring and analyzing the motion of fluids, each with distinct advantages depending on the scenario.
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...
1.5K
Uniform Depth Channel Flow: Problem Solving
92
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
92
Bernoulli's Equation: Problem Solving
1.4K
A Venturi meter is essential for measuring fluid flow rates in pipelines. It utilizes the relationship between fluid velocity and pressure described by Bernoulli's equation. When installed in a sewage system, the Venturi meter accurately determines the wastewater flow rate by measuring pressure differences.
The first step is to compute the cross-sectional areas of the pipe and the Venturi throat to analyze the pressure difference indicated by the pressure gauge. Next, the continuity...
The first step is to compute the cross-sectional areas of the pipe and the Venturi throat to analyze the pressure difference indicated by the pressure gauge. Next, the continuity...
1.4K
Traveling Waves: Lossless Lines
163
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx and a shunt capacitance CΔx.
163


