Wind Tunnel Test on Local Wind Field around the Bridge Tower of a Truss Girder

Zhang, Jingyu; Zhang, Mingjin; Huang, Bing; Li, Yongle; Yu, Jiaxin; Jiang, Fanying

doi:10.1155/2021/8867668

Cited by 5 publications

(5 citation statements)

References 28 publications

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“…e three-component balance system directly measures the force and moment with the help of strain gauges inside the balance. In modern wind tunnels, a six-component balance is available to measure lateral force, longitudinal force, vertical force, pitching moment, rolling moment, and yawing moment [30].…”

Section: Wind Tunnel Testingmentioning

confidence: 99%

Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing

Hasan

Mukesh²,

Krishnan

et al. 2022

Advances in Materials Science and Engineering

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This research paper aims to validate the aerodynamic performance of rotor blades using additive manufacturing techniques. Wind tunnel testing is a technique used to find the flow characteristics of the body. Computational fluid dynamics (CFD) techniques are used for aerodynamic analysis, and validation should be done using wind tunnel testing. In the aerodynamic testing of models, additive manufacturing techniques help in validating the results by making models easily for wind tunnels. Recent developments in additive manufacturing help in the aerodynamic testing of models in wind tunnels. The CFD analysis of helicopter rotor blades was analyzed in this research, and validation was done using additive manufacturing techniques. Computational analysis was carried out for static analysis for the forward speeds of Mach numbers 0.3, 0.4, and 0.5. The results obtained were satisfactory to the previous results and were validated with wind tunnel testing. Results proved that the error percentage was lower, and the computational analysis was valid. In this research, models were designed using the FDM technique for wind tunnel testing as it is cost-effective and easy to manufacture.

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Section: Wind Tunnel Testingmentioning

confidence: 99%

Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing

Hasan

Mukesh²,

Krishnan

et al. 2022

Advances in Materials Science and Engineering

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“…Two methods are commonly used to study the wind shielding effect of bridge tower: one is wind tunnel test [58][59][60], and the other is computational fluid dynamics [61][62][63]. The wind tunnel test involves the static train model and the moving train model.…”

Section: Sudden Change Effect Of Windsmentioning

confidence: 99%

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Xiang

Wang

et al. 2022

Rail. Eng. Science

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In recent years, high-speed railways in China have developed very rapidly, and the number and span of the railway bridges are keeping increasing. Meanwhile, frequent extreme disasters, such as strong winds, earthquakes and floods, pose a significant threat to the safety of the train–bridge systems. Therefore, it is of paramount importance to evaluate the safety and comfort of trains when crossing a bridge under external excitations. In these aspects, there is abundant research but lacks a literature review. Therefore, this paper provides a comprehensive state-of-the-art review of research works on train–bridge systems under external excitations, which includes crosswinds, waves, collision loads and seismic loads. The characteristics of external excitations, the models of the train–bridge systems under external excitations, and the representative research results are summarized and analyzed. Finally, some suggestions for further research of the coupling vibration of train–bridge system under external excitations are presented.

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“…The size of the bridge tower also increases with a large proportion even reaching tens of meters along the longitudinal bridge direction. The existence of the bridge tower will change the windy environment around the deck [13,14]. The authentic aerodynamic forces of the vehicle are determined by the flow field around it.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic characteristics of a high-speed train crossing the wake of a bridge tower from moving model experiments

Cai

et al. 2022

Rail. Eng. Science

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In a strong crosswind, the wake of a bridge tower will lead to an abrupt change of the aerodynamic forces acting on a vehicle passing through it, which may result in problems related to the transportation safety. This study investigates the transient aerodynamic characteristics of a high-speed train moving in a truss girder bridge and passing by a bridge tower in a wind tunnel. The scaled ratio of the train, bridge, and tower are 1:30. Effects of various parameters such as the incoming wind speed, train speed, and yaw angle on the aerodynamic performance of the train were considered. Then the sudden change mechanism of aerodynamic loads on the train when it crosses over the tower was further discussed. The results show that the bridge tower has an apparent shielding effect on the train passing through it, with the influencing width being larger than the width of the tower. The train speed is the main factor affecting the influencing width of aerodynamic coefficients, and the mutation amplitude is mainly related to the yaw angle obtained by changing the incoming wind speed or train speed. The vehicle movement introduces an asymmetry of loading on the train in the process of approaching and leaving the wake of the bridge tower, which should not be neglected.

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Wind Tunnel Test on Local Wind Field around the Bridge Tower of a Truss Girder

Cited by 5 publications

References 28 publications

Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing

Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Aerodynamic characteristics of a high-speed train crossing the wake of a bridge tower from moving model experiments

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