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Aerodynamic interference effects and mitigation measures on vortex-induced vibrations of two adjacent

Xiaoliang MENG, Ledong ZHU, Zhenshan GUO

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 510-517 doi: 10.1007/s11709-011-0129-3

Abstract: By examining the two neighboring Haihe Bridges with semi- and full-closed bridge decks, the aerodynamicinterference between the two decks on the vortex-induced vibration (VIV) and the corresponding aerodynamicmitigation measures are investigated via a series of wind tunnel tests with a spring-suspended sectionalstructural and aerodynamic configurations are adopted for the two bridges.Furthermore, an effective combined measure of adding wind barriers and sharpening the wind fairing noses

Keywords： separated parallel decks     vortex-induced vibration     aerodynamic interference     aerodynamic mitigation measure    

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Improved resilience measure for component recovery priority in power grids

Frontiers of Engineering Management 2021, Volume 8, Issue 4,   Pages 545-556 doi: 10.1007/s42524-021-0161-5

Abstract: Considering the severity of power grid disasters, an improved power grid resilience measure and its corresponding

Keywords： resilience measure     power grid     importance measure     component recovery    

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Numerical analysis of aerodynamic noise radiated from cross flow fan

CHEN Anbang, LI Song, HUANG Dongtao

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 443-447 doi: 10.1007/s11708-008-0063-9

Abstract: and the vortex wall sources contribute significantly to the total noise and that both the predicted aerodynamic

Keywords： predicted aerodynamic     Williams-Hawkings     calculated pressure     aerodynamic performance     unsteady Reynolds-averaged    

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Flutter control effect and mechanism of central-slotting for long-span bridges

YANG Yongxin, GE Yaojun, XIANG Haifan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 298-304 doi: 10.1007/s11709-007-0039-6

Abstract: been adopted in the design and construction of long-span bridges as an effective flutter controlling measureFive basic girder cross-sections representing five typical aerodynamic configurations were selected andmethod (2 dimension-3 degrees of freedom method, 2d-3DOF method) were carried out to investigate the aerodynamicThe results show that central-slotting can not always improve the aerodynamic stability of bridge structureThe control effect of central-slotting depends on the aerodynamic configuration of the original girder

Keywords： aerodynamic configuration     aerodynamic performance     flutter mechanism     aerodynamic stability     theoretical    

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Aerodynamic stability evolution tendency of suspension bridges with spans from 1000 to 5000 m

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0980-z

Abstract: Aerodynamic instability owing to aerostatic and flutter-related failures is a significant concern inTo analyze the aerodynamic instability, streamlined single-box section (SBS), lattice truss section (with span approximately 3000 m should be focused on both aerostatic instability and flutter, and more aerodynamic

Keywords： suspension bridge     super long-span     finite element model     aerodynamic instability     aerodynamic configuration    

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Experimental study of aerodynamic interference effects on aerostatic coefficients of twin deck bridges

Zhiwen LIU , Zhengqing CHEN , Gao LIU , Xinpeng SHAO ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 292-298 doi: 10.1007/s11709-009-0048-8

Abstract: The aerodynamic interference effects on aerostatic coefficients of twin deck bridges with large spantwin decks and wind attack angles were changed during the wind tunnel test to study the effects on aerodynamicThe lift and torque coefficients of windward and leeward decks are also affected slightly by the aerodynamicAnd the aerodynamic interference effects on lift and torque coefficients of twin decks can be neglected

Keywords： twin decks     aerodynamic interference effects     aerostatic coefficients     wind tunnel test    

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New response surface model and its applications in aerodynamic optimization of axial compressor blade

LIU Xiaojia, NING Fangfei

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 541-549 doi: 10.1007/s11708-008-0077-3

Abstract: Based on this model, a numerical aerodynamic optimization platform for the axial compressor 2D bladeprofiles is developed, by which aerodynamic optimization of two compressor blade profiles are presented

Keywords： definition     objective distribution     fitting precision     combination     numerical aerodynamic    

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Robust ensemble of metamodels based on the hybrid error measure

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 623-634 doi: 10.1007/s11465-021-0641-7

Abstract: Metamodels have been widely used as an alternative for expensive physical experiments or complex, time-consuming computational simulations to provide a fast but accurate analysis. However, challenge remains in the prior determination of the most suitable metamodel for a particular case because of the lack of information about the actual behavior of a system. In addition, existing studies on metamodels have largely restricted on solving deterministic problems (e.g., data from finite element models), whereas some real-life engineering problems (e.g., data from physical experiment) are stochastic problems with noisy data. In this work, a robust ensemble of metamodels (EMs) is proposed by combining three regression stand-alone metamodels in a weighted sum form. The weight factor is adaptively determined according to the hybrid error metric, which combines global and local error measures to improve the accuracy of the EMs. Furthermore, three typical individual metamodels that can filter noise are selected to construct the EMs to extend their application in practical engineering problems. Three well-known benchmark problems with different levels of noise and three engineering problems are used to verify the effectiveness of the proposed EMs. Results show that the proposed EMs have higher accuracy and robustness than the individual metamodels and other typical EMs in major cases.

Keywords： metamodel     ensemble of metamodels     hybrid error measure     stochastic problem    

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Aerodynamic impact of train-induced wind on a moving motor-van

Jiajun HE; Huoyue XIANG; Yongle LI; Bin HAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 909-927 doi: 10.1007/s11709-022-0833-1

Abstract: The newly-built single-level rail-cum-road bridge brings the issue of the aerodynamic impact of train-inducedSuch an aerodynamic impact mechanism was explored; a relationship between the transverse distance betweentrain and motor-van (hereinfafter referred to as van) and the aerodynamic effects on the van was exploredvariations of the van, even at a confirmed relative velocity, the aerodynamic variations of the vanThe decay of the aerodynamic effects shows that not all the velocity terms would enhance the aerodynamic

Keywords： rail-cum-road bridge     aerodynamic impact     train-induced wind     CFD     aerodynamic force     quantitative analysis    

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GREENHOUSE GAS AND AMMONIA EMISSION MITIGATION PRIORITIES FOR UK POLICY TARGETS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 268-280 doi: 10.15302/J-FASE-2023495

Abstract: >

● An expert survey highlighted the most effective strategies for GHG and ammonia mitigation

Keywords： agriculture     ammonia     greenhouse gas     mitigation     net zero    

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Numerical investigation of aerodynamic performance influenced by circumferentially pre-swirling coming

WANG Qikun, CHEN Kangmin

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 435-440 doi: 10.1007/s11708-007-0063-5

Abstract: Numerical investigation is implemented on aerodynamic performance inside the crossover and de-swirlingThe emphasis is put on the aerodynamic performance influenced by the circumferent

Keywords： aerodynamic     investigation     centrifugal     de-swirling     circumferent    

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Search for a natural scientific measure of economy

John E COULTER

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 111-118 doi: 10.1007/s11783-011-0285-7

Abstract: 1950s, is being researched, developed, and applied, especially in China, driven by the desperation to measure

Keywords： climate change     financial crisis     energy     exergy     environment    

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Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO,Yoko OKAZAKI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11709-015-0311-0

Abstract: Wind-tunnel study on the improvement of aerodynamic stability of simplified suspension-bridge girderAccordingly, aerodynamic countermeasures of open grating deck and triangular faring, and structural countermeasuresof center stay, diagonal bracing and mass increase were tried to improve the aerodynamic stability.

Keywords： suspension bridge     aerodynamics     simplified girder     wind-tunnel test    

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Fire hazard in transportation infrastructure: Review, assessment, and mitigation strategies

Venkatesh KODUR, M. Z. NASER

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 46-60 doi: 10.1007/s11709-020-0676-6

Abstract: This paper reviews the fire problem in critical transportation infrastructures such as bridges and tunnels. The magnitude of the fire problem is illustrated, and the recent increase in fire problems in bridges and tunnels is highlighted. Recent research undertaken to address fire problems in transportation structures is reviewed, as well as critical factors governing the performance of those structures. Furthermore, key strategies recommended for mitigating fire hazards in bridges and tunnels are presented, and their applicability to practical situations is demonstrated through a practical case study. Furthermore, research needs and emerging trends for enhancing the “state-of-the-art” in this area are discussed.

Keywords： fire hazard     bridges     tunnels     fire resistance     mitigation strategies     transportation infrastructure    

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Greenhouse gas emissions mitigation and economic viability of sugar crops in China

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023529

Abstract:

● Sugarcane and sugar beet yield and carbon footprint rose with time but profit declined

Keywords： Economic profits     GHG emissions     labor input     nitrogen input     sugar    

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Title Author Date Type Operation

Aerodynamic interference effects and mitigation measures on vortex-induced vibrations of two adjacent

Xiaoliang MENG, Ledong ZHU, Zhenshan GUO

Journal Article

Improved resilience measure for component recovery priority in power grids

Journal Article

Numerical analysis of aerodynamic noise radiated from cross flow fan

CHEN Anbang, LI Song, HUANG Dongtao

Journal Article

Flutter control effect and mechanism of central-slotting for long-span bridges

YANG Yongxin, GE Yaojun, XIANG Haifan

Journal Article

Aerodynamic stability evolution tendency of suspension bridges with spans from 1000 to 5000 m

Journal Article

Experimental study of aerodynamic interference effects on aerostatic coefficients of twin deck bridges

Zhiwen LIU , Zhengqing CHEN , Gao LIU , Xinpeng SHAO ,

Journal Article

New response surface model and its applications in aerodynamic optimization of axial compressor blade

LIU Xiaojia, NING Fangfei

Journal Article

Robust ensemble of metamodels based on the hybrid error measure

Journal Article

Aerodynamic impact of train-induced wind on a moving motor-van

Jiajun HE; Huoyue XIANG; Yongle LI; Bin HAN

Journal Article

GREENHOUSE GAS AND AMMONIA EMISSION MITIGATION PRIORITIES FOR UK POLICY TARGETS

Journal Article

Numerical investigation of aerodynamic performance influenced by circumferentially pre-swirling coming

WANG Qikun, CHEN Kangmin

Journal Article

Search for a natural scientific measure of economy

John E COULTER

Journal Article

Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO,Yoko OKAZAKI

Journal Article

Fire hazard in transportation infrastructure: Review, assessment, and mitigation strategies

Venkatesh KODUR, M. Z. NASER

Journal Article

Greenhouse gas emissions mitigation and economic viability of sugar crops in China

Journal Article