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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

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 170-185 doi: 10.1007/s11708-020-0680-5

Abstract: The insulation thickness (IT) of double pipes buried in the soil (DPBIS) for district heating (DH) systems

Keywords： 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

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: 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.delamination size and its position with respect to loading direction on stiffness of the composite pipesorientation with respect to loading direction on delamination propagation and stiffness reduction of the pipes

Keywords： 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,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 389-395 doi: 10.1007/s11708-009-0045-6

Abstract: predictive method was proposed to explore the erosion failure of reactor effluent air cooler (REAC) pipesBy CFD numerical simulations, the exact position where some typical pipes thinned and failed rapidly

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

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

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 165-175 doi: 10.1007/s11709-018-0484-4

Abstract: In this manuscript, we study fracture of prestressed cylindrical concrete pipes.Such concrete pipes play a major role in tunneling and underground engineering.

Keywords： cylindrical concrete structures     limit state analysis     3D fracture modelling     prestressed composite pipes    

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Experimental study on GFRP pipes under axial compression

QIAN Peng, FENG Peng, YE Lieping

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 73-78 doi: 10.1007/s11709-008-0013-y

Abstract: The behavior of pultruded glass fiber reinforced polymer (GFRP) pipes, which are the members of long-spanShort 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 differentBased on the results of the tests and literature, the formula of the buckling load of composite pipes

Keywords： 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,

Engineering doi: 10.1016/j.eng.2023.09.016

Abstract: Chloride concentration analysis demonstrated that separate cleaning of pipes with different materialscharacterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes

Keywords： 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

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 1056-1069 doi: 10.1007/s11709-022-0868-3

Abstract: optimization procedure is developed for obtaining optimal structural design of filament wound composite pipesproper computational tools are developed for predicting the structural properties of the composite pipes

Keywords： 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

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1506-3

Abstract:

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

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

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A New Explicit Equation for Calculating the Friction Factor for the Turbulent Flow in Pipes

Wang Yong,Yuan Qi

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 83-88

Abstract:

The friction factor for the turbulent flow in pipes is the binary nonlinear function of Reynolds numberabove method, a new explicit equation for calculating the friction factor for the turbulent flow in pipes

Keywords： turbulent flow     friction factor     implicit Colebrook equation     genetic algorithms     intelligent fitting method     explicit equation    

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Technological Development of High Speed Maglev System Based on Low Vacuum Pipeline

Feng Zhongwei, Fang Xing, Li Hongmei, Cheng Aijun, Pan Yongjie

Strategic Study of CAE 2018, Volume 20, Issue 6,   Pages 105-111 doi: 10.15302/J-SSCAE-2018.06.017

Abstract:

The wheel-rail type transit is the mainstream in the current rail transit technology system. However, due to the limitations of air resistance, wheel-rail adhesion, and operating noise, it is difficult to achieve economically any significant increase in the operation speed at the current technological level. To meet the demand for a higher economical operating speed, apart from the use of the magnetic levitation technique to reduce wheel-rail friction and vibration, construction of a low vacuum operating environment to reduce air resistance and noise is an important development direction for higher speed rail transit technology in the future. This paper expounds the significance of developing a high speed maglev system based on low vacuum pipelines, studies its technical characteristics and current situation, analyzes scientific problems and key technologies of this system, and puts forward relevant policy suggestions including project-setting research at the national level, building up test lines, and construction of national laboratories.

Keywords： rail transit     low vacuum pipes     high speed maglev     system technology    

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Thermal Management of Vehicle Cabins, External Surfaces, and Onboard Electronics: An Overview Review

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

Engineering 2019, Volume 5, Issue 5,   Pages 954-969 doi: 10.1016/j.eng.2019.02.009

Abstract: and insulated-gate bipolar transistors (IGBTs), active and passive cooling methods that employ heat pipes

Keywords： Vehicle design     Automotive engineering     Electronics packaging     Heat pipes     Climate control     Heating ventilation    

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Title Author Date Type Operation

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

Fating LI, Pengfei JIE, Zhou FANG, Zhimei WEN

Journal Article

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

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

Journal Article

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,

Journal Article

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

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

Journal Article

Experimental study on GFRP pipes under axial compression

QIAN Peng, FENG Peng, YE Lieping

Journal Article

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,

Journal Article

Structural optimization of filament wound composite pipes

Roham RAFIEE; Reza SHAHZADI; Hossein SPERESP

Journal Article

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

Journal Article

A New Explicit Equation for Calculating the Friction Factor for the Turbulent Flow in Pipes

Wang Yong,Yuan Qi

Journal Article

Technological Development of High Speed Maglev System Based on Low Vacuum Pipeline

Feng Zhongwei, Fang Xing, Li Hongmei, Cheng Aijun, Pan Yongjie

Journal Article

Thermal Management of Vehicle Cabins, External Surfaces, and Onboard Electronics: An Overview

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

Journal Article