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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    

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    

Research of the aerostatic and aerodynamic stability of super long-span cable-stayed bridges

Zhang Xinjun and Sun Hailing

Strategic Study of CAE 2014, Volume 16, Issue 3,   Pages 50-58

Abstract: length,the cable-stayed bridge tends to be a more slender structural system,and consequently the wind stabilityThree-dimensional nonlinear aerostatic and aerodynamic stability analysis of long-span bridges is usedto investigate the aerostatic and aerodynamic stability of a super long- span cable- stayed bridge withwith those of a suspension bridge with the similar main span,and considering from the aspect of wind stabilityIn addition,parametric analysis on the aerostatic and aerodynamic stability of super long-span cable-stayed

Keywords: super long-span cable-stayed bridge     aerostatic stability     aerodynamic stability     design parameter    

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: Five 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 girderthat the differences in flutter control effects come from the different formation and evolution of aerodynamic

Keywords: aerodynamic configuration     aerodynamic performance     flutter mechanism     aerodynamic stability     theoretical    

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    

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    

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    

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 aerodynamicThe results show that the VIV responses of both bridges can be significantly affected by the aerodynamicstructural and aerodynamic configurations are adopted for the two bridges.Otherwise, the VIV responses are not significantly increased and may even be reduced by the aerodynamic

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

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    

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    

Parametric oscillation of cables and aerodynamic effect

Yong XIA, Jing ZHANG, Youlin XU, Yozo FUJINO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 321-325 doi: 10.1007/s11709-010-0028-z

Abstract: This paper addresses the aerodynamic effect on the nonlinear oscillation, particularly parametric vibrationVia numerical analysis, the stability condition of the cable in terms of wind speed is derived.

Keywords: parametric vibration     cables     cable-stayed bridge     nonlinear vibration    

Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 661-682 doi: 10.1007/s11708-020-0713-0

Abstract: In this paper, the aerodynamic performance of the wind-lens is computationally assessed using high-fidelityvalidation are accomplished to prove that the proposed methodology could be able to precisely predict the aerodynamic

Keywords: shroud     diffuser-augmented wind turbine (DAWT)     Betz limit     aerodynamics     computational fluid dynamics (CFD)    

Solvates and polymorphs of clindamycin phosphate: Structural, thermal stability and moisture stability

Junbo Gong, Dejiang Zhang, Yuanyuan Ran, Keke Zhang, Shichao Du

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 220-230 doi: 10.1007/s11705-017-1624-4

Abstract: Clindamycin phosphate (CP), an antibacterial agent, has been reported to form several solid-state forms. The crystal structures of two CP solvates, a dimethyl sulfoxide (DMSO) solvate and a methanol/water solvate (solvate V), have been determined by single crystal X-ray diffraction. The properties and transformations of these forms were characterized by powder X-ray diffraction, Single-crystal X-ray diffraction, differential scanning calorimetry, thermo gravimetric analysis, hot-stage microscopy, and dynamic vapor sorption. Very different hydrogen bonding networks exist among the host-host and host-solvent molecules in the two crystal structures, resulting in different moisture stabilities. The thermal stabilities of the two solvates upon heating and desolvation were also studied. When the temperature was above the boiling point of methanol, solvate V converted to a polymorphic phase after a one step desolvation process, whereas the desolvation temperature of the DMSO solvate was below the boiling point of DMSO. At the relative humidity above 43%, the DMSO solvate transformed to a hydrate at 25 °C. In contrast, solvate V did not transform at any of the humidities studied.

Keywords: clindamycin phosphate     solvate     crystal structure     thermal stability     moisture stability    

A Research on the Aerodynamic Characteristics of a Small Aspect Ratio, High Lift Fighter Configuration

Song Wencong,Xie Pin,Zheng Sui,Li Yupu

Strategic Study of CAE 2001, Volume 3, Issue 8,   Pages 70-75

Abstract: A. aerodynamic performances at low speed and supersonic drag characteristics.goals could only be achieved by studying flow principles deeply, digging up the potentials of present aerodynamicimproving measures, developing new aerodynamic concepts, adopting interrelated integration and flight

Keywords: aerodynamic configuration     supersonic cruise     stealth     post-stall maneuvers    

Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 153-162 doi: 10.1007/s11709-007-0016-0

Abstract: After the performances of the countermeasures for raising the aerodynamic stability are reviewed, a trialchallenge in span length of suspension bridges with the particular aspects, including dynamic stiffness, aerodynamicflutter and aerostatic stability.

Keywords: requirement     reasonable limitation     challenge     particular     economical construction    

Title Author Date Type Operation

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

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

Research of the aerostatic and aerodynamic stability of super long-span cable-stayed bridges

Zhang Xinjun and Sun Hailing

Journal Article

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

YANG Yongxin, GE Yaojun, XIANG Haifan

Journal Article

Numerical analysis of aerodynamic noise radiated from cross flow fan

CHEN Anbang, LI Song, HUANG Dongtao

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

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

Xiaoliang MENG, Ledong ZHU, Zhenshan GUO

Journal Article

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

Jiajun HE; Huoyue XIANG; Yongle LI; Bin HAN

Journal Article

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

WANG Qikun, CHEN Kangmin

Journal Article

Parametric oscillation of cables and aerodynamic effect

Yong XIA, Jing ZHANG, Youlin XU, Yozo FUJINO,

Journal Article

Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED

Journal Article

Solvates and polymorphs of clindamycin phosphate: Structural, thermal stability and moisture stability

Junbo Gong, Dejiang Zhang, Yuanyuan Ran, Keke Zhang, Shichao Du

Journal Article

A Research on the Aerodynamic Characteristics of a Small Aspect Ratio, High Lift Fighter Configuration

Song Wencong,Xie Pin,Zheng Sui,Li Yupu

Journal Article

Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Journal Article