搜索结果: 1-15 共查到“知识库 工学 pipe”相关记录38条 . 查询时间(0.071 秒)
Effects of hydrophilic surface on heat transfer performance and oscillating motion for an oscillating heat pipe
Oscillating heat pipe (OHP) Oscillating motion Heat transfer Superhydrophilic surface Hydrophilic surface
2023/3/1
In this paper, a series of experiments were performed to investigate the effects of superhydrophilic and hydrophilic surfaces on the heat transfer performance and slug motion for oscillating heat pipe...
ASSESSING THE CONDITION OF BURIED PIPE USING GROUND PENETRATING RADAR (GPR)
Ground Penetrating Radar (GPR) Pipe deterioration Buried utilities
2018/11/8
The invention of Ground Penetrating Radar (GPR) technology has facilitated the possibility of detecting buried utilities and has been used primarily in civil engineering for detecting structural defec...
AUTOMATIC GENERALIZABILITY METHOD OF URBAN DRAINAGE PIPE NETWORK CONSIDERING MULTI-FEATURES
Stroke Urban Drainage Pipe Network Generalization Similarity Criterion Multi-features
2018/5/17
Urban drainage systems are indispensable dataset for storm-flooding simulation. Given data availability and current computing power, the structure and complexity of urban drainage systems require to b...
A New Application of Photogrammetry in the Underground Pipe Network Survey
Photogrammetric Instrument Underground Pipe Survey Secure Efficient
2016/11/11
This paper mainly introduces a device that can be used for underground pipeline survey task. Through the cameras installed on the device, we can obtain stereo synchronous shooting images, and then use...
Efficient Pipe Installation Support System for Module Build
Space-Borne Scanner System 3D Sensors Aerial Survey
2015/12/16
The number of large industrial plants being planned and constructed in Japan has increased tremendously in recent times. By
reducing the construction costs involved in the development of these plants...
DEVELOPING A WATER PIPE MANAGEMENT SYSTEM IN SEOUL USING THE GIS
GIS Development Management AM/FM Decision Support Networks
2015/6/1
The water mains burst in Seoul, Korea is one of the most frequently raised water management problems and the major reason can be found in the inefficiency in design and management of the network. The ...
OBJECT-ORIENTED MEASUREMENT OF PIPE SYSTEMS USING EDGE MATCHING AND CSG MODELS WITH CONSTRAINTS
CAD error propagation object-oriented photogrammetry reconstruction
2015/1/6
A method for the measurement of pipe systems from a collection of images is presented. A predefined library of parameterized object models defined by CSG trees is used to describe several types of pip...
Model optimization method and connected-pipe experiment of a liquid fuel ramjet engine
ramjet engine model optimization altitude test facility(ATF) connected-pipe experiment simulation technique
2014/5/19
The optimization method of a mathematical model and connected-pipe experimental technique for a test in altitude test facility (ATF) of a liquid fuel ramjet engine was researched.The optimization of t...
Boundary-trapped, inhalant siphon and drain flows: Pipe entry revisited numerically
hydraulic entrance length siphon flow pipe entry inhalant siphon bifurcation,
2014/4/1
Flows produced in suspension feeding and tube and burrow ventilation cause and influence many exchange processes and chemical reactions. I investigated two geometries, a capillary drawing water far fr...
An extended risk assessment approach for chemical plants applied to a study related to pipe ruptures
Quantitative risk assessment Uncertainties Chemical industry
2012/4/22
Risk assessments and Quantitative Risk Assessment (QRA) in particular have been used in the chemical industry for many years to support decision-making on the choice of arrangements and measures assoc...
Study on fluid-structure interaction in liquid oxygen feeding pipe systems using finite volume method
Fluid-structure interaction Liquid oxygen Finite volume method
2012/2/29
The fluid-structure interaction may occur in space launch vehicles, which would lead to bad performance of vehicles, damage equipments on vehicles, or even affect astronauts' health. In this paper, an...
Numerical Simulation of Oil Dispersions in Vertical Pipe Flow
Numerical simulation Computational fluid dynamics Immiscible dispersion Vertical pipe flow Interface force
2010/9/8
Immiscible liquid dispersions are widely used in chemical process, petroleum industries, polymerization, heterogeneous chemical synthesis, etc. In most of these chemical processes, the rate of inter-p...
Fractographic study of high-density polyethylene gas pipe following Small Scale Steady State test
Fractographic high-density polyethylene gas pipe Small Scale Steady State test
2010/8/12
Polyethylene (PE) is the primary material used for gas pipe applications. Because of its flexibility, ease of joining and long-term durability, along with lower installed cost and lack of corrosion, g...
高压断路器液压操动机构管道特性研究（Pipe Characteristics of High Voltage Circuit Breaker with Hydraulic Operating Mechanism）
高压断路器 液压操动机构 管道损失
2010/1/28
以550kV SF6高压断路器液压操动机构为研究对象，分析了液压机构分合闸过程中的管道损失和压力波传递效应，建立了管道损失和压力波动分布参数模型。对系统进行了建模和仿真，讨论了液压机构的管道特性及管道结构参数对系统分合闸性能的影响。试验验证了仿真结果，证明了仿真模型的准确性。
基于双重编码遗传算法和图论的自压树状管网优化（Optimization of Gravity Tree-type Pipe Network Based on Dual Coding Genetic Algorithm and Graph Theory）
树状管网 优化 遗传算法
2010/1/28
以投资最小为目标函数，压力、流速、管径等限制为约束条件，建立了自压树状管网优化数学模型，并采用改进遗传算法进行求解。根据树状管网优化的特点，遗传算法采用二进制编码和整数编码相结合的双重编码，实现了同时对管网布置形式和管径进行优化。根据图论中树的性质，在产生初始解及变异操作时，采用基于圈的方法，对交叉方法进行了改进，从而减少了不可行解的产生。同时对遗传算法的操作过程进行了改进，结合了模拟退火算法，调...