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期刊论文 11

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2022 2

2021 1

2019 3

2018 1

2009 1

2008 1

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关键词

Colebrook隐式方程 1

低真空管道 1

加热、通风和空调 1

摩擦因数 1

显式方程 1

智能拟合法 1

气候控制 1

汽车工程 1

湍动流动 1

热浸 1

热管 1

电子产品包装 1

电池降温 1

系统技术 1

车辆设计 1

轨道交通 1

遗传算法 1

高速磁悬浮 1

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Determining the optimum economic insulation thickness of double pipes buried in the soil for district

Fating LI, Pengfei JIE, Zhou FANG, Zhimei WEN

《能源前沿（英文）》 2021年 第15卷 第1期   页码 170-185 doi: 10.1007/s11708-020-0680-5

摘要： The insulation thickness (IT) of double pipes buried in the soil (DPBIS) for district heating (DH) systems was optimized to minimize the annual total cost of DPBIS for DH systems. An optimization model to obtain the optimum insulation thickness (OIT) and minimum annual total cost (MATC) of DPBIS for DH systems was established. The zero point theorem and fsolve function were used to solve the optimization model. Three types of heat sources, four operating strategies, three kinds of insulation materials, three buried depth (BD) values, and seven nominal pipe size (NPS) values were considered in the calculation of the OIT and MATC of DPBIS for DH systems, respectively. The optimization results for the above factors were compared. The results show that the OIT and MATC of DPBIS for DH systems can be obtained by using the optimization model. Sensitivity analysis was conducted to investigate the impact of some economic parameters, i.e., unit heating cost, insulation material price, interest rate, and insulation material lifetime, on optimization results. It is found out that the impact of sensitivity factors on the OIT and MATC of DPBIS for DH systems is different.

关键词： double pipes     optimization model     optimum insulation thickness     minimum annual total cost    

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Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

《结构与土木工程前沿（英文）》 2019年 第13卷 第6期   页码 1316-1323 doi: 10.1007/s11709-019-0555-1

摘要： The effect of delamination on the stiffness reduction of composite pipes is studied in this research. The stiffness test of filament wound composite pipes is simulated using cohesive zone method. The modeling is accomplished to study the effect of the geometrical parameters including delamination size and its position with respect to loading direction on stiffness of the composite pipes. At first, finite element results for stiffness test of a perfect pipe without delamination are validated with the experimental results according to ASTM D2412. It is seen that the finite element results agree well with experimental results. Then the finite element model is developed for composite pips with delaminated areas with different primary shapes. Thus, the effect of the size of delaminated region on longitudinal and tangential directions and also its orientation with respect to loading direction on delamination propagation and stiffness reduction of the pipes is assessed.

关键词： delamination     composite pipes     stiffness test     cohesive zone method    

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Erosion-corrosion failure of REAC pipes under multiphase flow

Ping TANG, Jian YANG, Jinyang ZHENG, Shizheng HE, Jianjun YE, Guofu OU, Ieong WONG, Yanbao MA,

《能源前沿（英文）》 2009年 第3卷 第4期   页码 389-395 doi: 10.1007/s11708-009-0045-6

摘要： By using computational fluid dynamics (CFD) modeling and simulation, a predictive method was proposed to explore the erosion failure of reactor effluent air cooler (REAC) pipes with liner under multiphase flow. A theoretical model based on the erosion-corrosion effects of REAC on mixture turbulent flow was proposed for multiphase flow. Effects of various working conditions, liner shapes, and structures, as well as flow parameters on numerical simulations were investigated. Besides, the pipe’s erosion-corrosion rules under multiphase flow and the relationship between multiphase flow and erosion-corrosion under dangerous working conditions were studied. By CFD numerical simulations, the exact position where some typical pipes thinned and failed rapidly by erosion was found and the main factors causing erosion-corrosion failure were discussed. Finally, numerical results obtained by using the proposed method were compared with experimental results.

关键词： multiphase flow     erosion-corrosion     pipes     reactor effluent air cooler (REAC)     computational fluid dynamics (CFD)    

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3D fracture modelling and limit state analysis of prestressed composite concrete pipes

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

《结构与土木工程前沿（英文）》 2019年 第13卷 第1期   页码 165-175 doi: 10.1007/s11709-018-0484-4

摘要： In this manuscript, we study fracture of prestressed cylindrical concrete pipes. Such concrete pipes play a major role in tunneling and underground engineering. The structure is modelled fully in 3D using three-dimensional continuum elements for the concrete structure which beam elements are employed to model the reinforcement. This allows the method to capture important phenomena compared to a pure shell model of concrete. A continuous approach to fracture is chosen when concrete is subjected to compressive loading while a combined continuous-discrete fracture method is employed in tension. The model is validated through comparisons with experimental data.

关键词： cylindrical concrete structures     limit state analysis     3D fracture modelling     prestressed composite pipes     reinforced concrete     three-point bending test    

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Experimental study on GFRP pipes under axial compression

QIAN Peng, FENG Peng, YE Lieping

《结构与土木工程前沿（英文）》 2008年 第2卷 第1期   页码 73-78 doi: 10.1007/s11709-008-0013-y

摘要： Fiber reinforced polymer (FRP) is suitable for structures in corrosive environment and long-span light-weight structures due to its high-strength, light-weight, and anti-corrosive qualities. The behavior of pultruded glass fiber reinforced polymer (GFRP) pipes, which are the members of long-span lattice structures, under axial compression was investigated by tests. Short GFRP pipes were first tested to determine the basic mechanical properties. Then the stability of long GFRP pipes was studied by axially compressive tests in four groups with different slenderness ratios, twelve specimens totally. Based on the results of the tests and literature, the formula of the buckling load of composite pipes under axially compressive load was presented based on Perry formula. It can well predict the buckling failure load GFRP pipe under axial compression.

关键词： anti-corrosive     compression     different slenderness     corrosive environment     long-span light-weight    

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Application of Ice Pigging in a Drinking Water Distribution System: Impacts on Pipes and Bulk Water Quality

Yujing Huang,Zhiwei Chen,Guilin He,Yu Shao,Shuang Song,Feilong Dong,Tuqiao Zhang,

《工程（英文）》 doi: 10.1016/j.eng.2023.09.016

摘要： Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems. However, substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality. This study monitored the microstructural features and composition of sediments and microbial community structures in bulk water in eight multimaterial Chinese networks. Chloride concentration analysis demonstrated that separate cleaning of pipes with different materials in complex networks could mitigate the risk of losing ice pigs and degrading water quality. The microstructural and trace element characterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes. The bacterial richness and diversity of bulk water decreased significantly after ice pigging. Furthermore, correlations were established between pipe service age, temperature, total iron and chloride concentrations, and the 15 most abundant taxa in bulk water, which could be used to guide practical ice pigging operations.

关键词： Ice pigging     Pipe cleaning     Drinking water distribution system     Bacterial community     Sediments    

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Structural optimization of filament wound composite pipes

Roham RAFIEE; Reza SHAHZADI; Hossein SPERESP

《结构与土木工程前沿（英文）》 2022年 第16卷 第8期   页码 1056-1069 doi: 10.1007/s11709-022-0868-3

摘要： An optimization procedure is developed for obtaining optimal structural design of filament wound composite pipes with minimum cost utilized in pressurized water and waste-water pipelines. First, the short-term and long-term design constraints dictated by international standards are identified. Then, proper computational tools are developed for predicting the structural properties of the composite pipes based on the design architecture of layers. The developed computational tools are validated by relying on experimental analysis. Then, an integrated design-optimization process is developed to minimize the price as the main objective, taking into account design requirements and manufacturing limitations as the constraints and treating lay-up sequence, fiber volume fraction, winding angle, and the number of total layers as design variables. The developed method is implemented in various case studies, and the results are presented and discussed.

关键词： composite pipes     optimization     experimental validation     computational modeling     filament winding    

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effects of sodium hypochlorite disinfection and iron-oxidizing bacteria on early corrosion in cast iron pipes

《环境科学与工程前沿（英文）》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1506-3

摘要：

• The early corrosion process in the cast iron pipes was investigated.

关键词： Cast iron pipe corrosion     Drinking water distribution systems     Chlorine disinfection     Iron-oxidizing bacteria     Coupling effects    

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计算管内湍动流体摩擦因数的显式新方程

王勇,阮奇

《中国工程科学》 2006年 第8卷 第6期   页码 83-88

摘要：

管内湍动流体摩擦因数是雷诺数和相对粗糙度的二元非线性函数，由Colebrook隐式方程计算摩擦因数要用迭代的方法求解，很不方便。为了得到形式简单、精度高的计算摩擦因数的显式方程，提出了二元非线性多项式智能拟合法。该法将二元非线性多项式转化成多元线性多项式并建立线性最小二乘法标准矩阵，用遗传算法结合矩阵法对多项式的项数、项型式项指数及项系数进行搜索得到最优的拟合函数式。用该法拟合了Colebrook方程解的数据，得到一个计算管内湍动流体摩擦因数的显式新方程。在雷诺数3.000≤Re≤108、相对粗糙度0≤e/d≤0.05的范围内，该方程计算结果与Colebrook方程的平均偏差为0.5%，最大偏差不超过1.8%，与实验数据偏差为2.3%。新方程具有形式简单、精度高、适用范围广的优点，且便于简化成光滑管或阻力平方区等情况下的计算摩擦因数的方程。

关键词： 湍动流动     摩擦因数     Colebrook隐式方程     遗传算法     智能拟合法     显式方程    

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低真空管道高速磁悬浮系统技术发展研究

冯仲伟,方兴,李红梅,程爱君,潘永杰

《中国工程科学》 2018年 第20卷 第6期   页码 105-111 doi: 10.15302/J-SSCAE-2018.06.017

摘要：

轮轨式是目前轨道交通技术体系的主流，但由于空气阻力、轮轨黏着、运行噪声等问题的限制，在现有的技术水平下，难以经济地实现运营速度大幅度提高。为满足更高经济运行速度的需求，在利用磁悬浮技术减少轮轨摩擦、振动的基础上，构建低真空运行环境以减小空气阻力和噪声是未来更高速度轨道交通技术发展的重要方向。本文阐述了发展低真空管道高速磁悬浮系统的意义，研究了其技术特点、发展现状，分析了低真空管道高速磁悬浮系统的科学问题和关键技术，并提出了在国家层面立项研究、建设试验线和国家级实验室的政策建议。

关键词： 轨道交通     低真空管道     高速磁悬浮     系统技术    

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车辆舱室、外表面和机载电子设备的热管理概述 Review

Garrett J. Marshall, Colin P. Mahony, Matthew J. Rhodes, Steve R. Daniewicz, Nicholas Tsolas, Scott M. Thompson

《工程（英文）》 2019年 第5卷 第5期   页码 954-969 doi: 10.1016/j.eng.2019.02.009

摘要：

减少车辆内部的热量积累并确保适当的车辆温度水平可以提高车辆的燃油经济性、行驶里程、可靠性、使用寿命、乘客舒适度和安全性。随着新技术、消费者需求、社会关注和政府法规的出现和发展，汽车热管理的改善仍然是关键。本文总结了汽车热管理技术和建模的最新进展，重点研究了三个关键领域：汽车舱室、电子设备和外部部件。所涵盖的有关舱室的主题包括减少热负荷和改善暖通空调（heating, ventilation, and air-conditioning, HVAC）系统的方法；以及窗户玻璃/着色和车辆表面处理方面的改善。讨论了关于电子设备的热管理，包括电池和绝缘栅双极晶体管（insulatedgate bipolar transistor, IGBT），以及采用热管、散热器、射流冲击、强制对流和相变材料的主动和被动降温方法。最后，在考虑阻力/摩擦力和环境影响的情况下，回顾了建立和增强车辆外部部件传热模型的工作。尽管我们在汽车热管理领域取得了一定的进步，但挑战仍然存在；本文对主要问题进行了概括，并提出了进一步研究的建议。

关键词： 车辆设计     汽车工程     电子产品包装     热管     气候控制     加热、通风和空调     电池降温     热浸    

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标题 作者 时间 类型 操作

Determining the optimum economic insulation thickness of double pipes buried in the soil for district

Fating LI, Pengfei JIE, Zhou FANG, Zhimei WEN

期刊论文

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

期刊论文

Erosion-corrosion failure of REAC pipes under multiphase flow

Ping TANG, Jian YANG, Jinyang ZHENG, Shizheng HE, Jianjun YE, Guofu OU, Ieong WONG, Yanbao MA,

期刊论文

3D fracture modelling and limit state analysis of prestressed composite concrete pipes

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

期刊论文

Experimental study on GFRP pipes under axial compression

QIAN Peng, FENG Peng, YE Lieping

期刊论文

Application of Ice Pigging in a Drinking Water Distribution System: Impacts on Pipes and Bulk Water Quality

Yujing Huang,Zhiwei Chen,Guilin He,Yu Shao,Shuang Song,Feilong Dong,Tuqiao Zhang,

期刊论文

Structural optimization of filament wound composite pipes

Roham RAFIEE; Reza SHAHZADI; Hossein SPERESP

期刊论文

effects of sodium hypochlorite disinfection and iron-oxidizing bacteria on early corrosion in cast iron pipes

期刊论文

计算管内湍动流体摩擦因数的显式新方程

王勇,阮奇

期刊论文

低真空管道高速磁悬浮系统技术发展研究

冯仲伟,方兴,李红梅,程爱君,潘永杰

期刊论文

车辆舱室、外表面和机载电子设备的热管理概述

Garrett J. Marshall, Colin P. Mahony, Matthew J. Rhodes, Steve R. Daniewicz, Nicholas Tsolas, Scott M. Thompson

期刊论文