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Dongwei Qiu, Haorong Liang, Zhilin Wang, Yuci Tong and Shanshan Wan
Quickly and accurately identifying water leakage is one of the important components of the health monitoring of subway tunnels. A mobile vision measurement system consisting of several high-resolution, industrial, charge-coupled device (CCD) cameras is p...
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Qihua Deng, Junru Zhang, Feng Lu, Ziyan Fan, Yi Wang and Zhi Lin
The high water content of the surrounding rock in loess tunnels will lead to the deterioration of rock strength, causing deformation and damage to the initial support structure and thereby affecting safety during construction and operation. This article ...
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Haibo Jiang, Dongsen Zhai, Kebin Shi and Pengfei Xiang
In order to study the bearing safety and influencing factors of the support structures of hydraulic tunnels in cold regions under the action of low-temperature frost heave, a mechanical model of the support structure and surrounding rock was established....
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Liang Zhang, Dongli Ma, Muqing Yang, Yuan Yao, Yayun Yu and Xiaopeng Yang
This study is meaningful for the design and analysis of the flexible skin wings for long-endurance low-speed aircraft.
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Chaoqun Wang, Xugang Hua, Zhiwen Huang and Qing Wen
Much work has been devoted to the investigation and understanding of the flow-induced vibrations of twin cylinders vibrating individually (e.g., vortex-induced vibration and wake-induced galloping), but little has been devoted to coupled twin cylinders w...
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Ken Wakimoto, Kazuhisa Chiba, Hiroyuki Kato and Kazuyuki Nakakita
This study conducted wind tunnel tests with consecutive deflection angle changes on a three-dimensional (3D) wing with a control surface to procure aerodynamic data by sweeping the deflection angle. Configuration changes of a wind tunnel test model, such...
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Minh N. Doan, Yuriko Kai, Takuya Kawata and Shinnosuke Obi
Recent developments in marine hydrokinetic (MHK) technology have put the cross-flow (often vertical-axis) turbines at the forefront. MHK devices offer alternative solutions for clean marine energy generation as a replacement for traditional hydraulic tur...
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Minh N. Doan, Takuya Kawata and Shinnosuke Obi
Cross-flow hydrokinetic turbines have sparked interest among fluid dynamicists for their potential for power enhancement in paired configuration. Following the first part of a laboratory-scaled turbine wake measurement project, this second part presents ...
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Minh N. Doan, Yuriko Kai and Shinnosuke Obi
This article proposes an experimental apparatus design to measure the power of a cross-flow marine hydrokinetic turbine system operating in a laboratory water tunnel. Data, from one Hall sensor output signal, was processed to capture the three types of t...
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Kazuhisa Chiba, Tatsuro Komatsu, Hiroyuki Kato and Kazuyuki Nakakita
We have developed a remote and precise feedback control system using optical measurement technology to alter the angle of a flap, which is part of a wind tunnel test model, automatically and to earn the aerodynamic data efficiently. To rectify the wastef...
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Shizhong Zhang, Qiu Wang, Jinping Li, Xiaoyuan Zhang and Hong Chen
Robust fast-response transient calorimeters with novel calorimeter elements have attracted the attention of researchers as new synthetic materials have been developed. This sensor uses diamonds as the calorimeter element, and a platinum film resistance i...
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Katerina Maneva Mitrovikj,Frani?ek Skácel
Pág. 213 - 223
Road transportation activities are major contributors of nitrogen oxides emissions to the air. The impact on the growth of NOx emission levels is found to be strongly correlated with the traffic intensities on highways. Various types of emission models p...
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Matteo Moioli, Christopher Reinbold, Kaare Sørensen and Christian Breitsamter
Wind tunnel models are traditionally machined from high-quality metal material; this condition reduces the possibility to test different geometric variations or models as it corresponds to incremental cost. In the last decade, the quality of additive man...
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Qingqing Zhang, Ruixiao Li, Huijun Yuan and Huarong Zhong
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Diego Muniz Benedetti and Carlos Alberto Gurgel Veras
An instrumentation system for in-situ measurement of the inner-outer pressure differential at the upper and lower surfaces of dynamically inflatable wings is designed and tested, revealing important insights into the aerodynamic characteristics of inflat...
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Eliseo Bustamante, Fernando-Juan García-Diego, Salvador Calvet, Antonio G. Torres and Antonio Hospitaler
A building needs to be designed for the whole period of its useful life according to its requirements. However, future climate predictions involve some uncertainty. Thus, several sustainable strategies of adaptation need to be incorporated after the init...
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Christian Franzmann, Friedrich Leopold and Christian Mundt
An experimental method for the determination of the pitch damping moment coefficient sum ??????+???????
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in a wind tunnel at transonic and low supersonic Mach numbers is developed. With support interference being a major issue for dynamic...
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Gang Wei, Pengfei Xiang, Haibo Jiang, Di Sun, Fengjun Xu and Huifang Guo
For the effect of two-sided sudden surcharge/unloading on existing shield tunnels, an indoor dimensional reduction model test was conducted at a scale of 1:15.5, measuring the ground settlement, lateral convergence of the shield tunnel, and additional su...
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Yi Su, Jin Di, Shaopeng Li, Bin Jian and Jun Liu
The traditional method for calculating the buffeting response of long-span bridges follows the strip assumption, and is carried out by identifying aerodynamic parameters through sectional model force or pressure measurement wind tunnel tests. However, th...
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Yewei Huang and Wenli Chen
In this study, we employed a four-hole cobra probe to measure the wake characteristics of a rec-tangular bridge tower model in a wind tunnel. The scale of the model was 1:30, and the Reynolds number varied from 1.38 × 105 to 2.27 × 105 by changing the ya...
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