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Weiwei Zhou, Menglan Duan, Rongqi Chen, Shisheng Wang and Huiming Li
A model test was carried out to reveal the vortex-induced vibration characteristics of a deep-sea riser under bidirectional shear flow. Bandpass filtering and modal analysis were used to process the test strain data, and the amplitude and frequency respo...
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Xiaoni Yang, Juanjuan Ma, Yongye Li, Xihuan Sun, Xiaomeng Jia and Yonggang Li
Hydraulic transportation of the piped carriage is a new energy-saving and environmentally-friendly transportation mode. There are two main states in the conveying process, stationary and moving. In the process of hydraulic transportation of the piped car...
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Chi Zhang, Yaguo Lyu, Le Jiang and Zhenxia Liu
The numerical simulation method was used to investigate the deflection and deformation process of a circular lubricating oil jet in transverse shear airflow. The numerical model was compared and validated against the experimental data. The physical param...
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Daria Gladskikh, Lev Ostrovsky, Yuliya Troitskaya, Irina Soustova and Evgeny Mortikov
Within the framework of the theory of unsteady turbulent flows in a stratified fluid, a new parameterization of the turbulent Prandtl number is proposed. The parameterization is included in the k-e-closure and used within the three-dimensional model of t...
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Igor Shugan and Yang-Yih Chen
The ship?s wake in the presence of a shear flow of constant vorticity at a finite water depth is investigated by expanding the Whitham-Lighthill kinematic theory. It has been established that the structure of a wave ship wake radically depends on Froude ...
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Lihan Hu, Jin Xu, Lingling Wang and Hai Zhu
To simulate the dynamical structures of stratified shear flows, the high-resolution Total Variation Diminishing (TVD) method is necessary and widely-used due to its high-order spatial accuracy, oscillation control, and ability to capture the well-defined...
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Malek Abid, Christian Kharif, Hung-Chu Hsu and Yang-Yih Chen
The theory of surface wave generation, in viscous flows, is modified by replacing the linear-logarithmic shear velocity profile, in the air, with a model which links smoothly the linear and logarithmic layers through the buffer layer. This profile includ...
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Pengcheng Cui, Guiyu Zhou, Yaobing Zhang, Hongyin Jia, Xiaojun Wu, Mingsheng Ma, Huan Li and Bing Chen
The internal weapon bay is widely used in modern aircraft; however, because the unsteady flows of the cavity would cause dangerous store separation and intense aerodynamic noise, the leading-edge spoiler is an easy and efficient passive flow-control meth...
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Jin Huang, Wenjian Chen, Ruizhi Shu and Jing Wei
The viscoplastic flow of magnetorheological fluid in a disc was analyzed based on the Navier?Stokes Momentum Equation, and the yielded and unyielded decomposition surfaces were obtained. For the shear-thinning phenomenon of magnetorheological fluid, the ...
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Ziyan Wei, Jie Li, Songxiang Tang and Zhao Yang
Flow separation is easily induced at the junctions of aircraft components, and for aircraft with T-type tails, in particular, it can lead to loss of directional stability under a small sideslip angle. In the reported study, improved delayed detached eddy...
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Patrick Fillingham, Arjun Viswanathan and Igor V. Novosselov
Though inclined under-expanded planar jets are used in many practical applications, the wall stress resulting from their impingement has not been adequately characterized. Reduced-order models for wall shear as a function of jet parameters have not been ...
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Keyuan Wang, Yunkai Li, Shumei Ren and Peiling Yang
The research results in this paper can help to improve the efficiency of fine sediment water treatment and to optimize the structure of similar settling tanks. Further, the observation method used in this paper may inspire other scholars who study the fl...
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Mitsugu Hasegawa, Katsuaki Morita, Hirotaka Sakaue and Shigeo Kimura
The recent development of a superhydrophobic surface enhances the droplet shedding under a shear flow. The present study gives insights into the effects of shear flow on a pinned droplet over a superhydrophobic surface. To experimentally simulate the cha...
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Hitoshi Tanaka, Nguyen Xuan Tinh and Ahmad Sana
The transitional flow regime of the bottom boundary layer under hypothetical shoaling tsunamis is investigated in the entire region from the tsunami source to the shallow sea area. In order to calculate the shoaling process of a tsunami, an analytical me...
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Zhongfan Zhu, Jingshan Yu, Hongrui Wang, Jie Dou and Cheng Wang
The morphological properties of kaolin flocs were investigated in a Couette-flow experiment at the steady state under seven shear flow conditions (shear rates of 5.36, 9.17, 14, 24, 31, 41 and 53 s-1). These properties include a one-dimensional (1-D) fra...
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Zhongfan Zhu, Jingshan Yu, Hongrui Wang, Jie Dou and Cheng Wang
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Yusron Saadi
Pág. pp. 89 - 98
The objective of this research was to examine and to quantify the stability of mixed grain sediment beds previously exposed to different time length of uniform antecedent flow hydrograph. The assessment of bed stability was carried out based on the obser...
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Vera M. van Bergeijk, Jord J. Warmink and Suzanne J. M. H. Hulscher
The wave overtopping flow can exert high hydraulic loads on the grass cover of dikes leading to failure of the cover layer on the crest and the landward slope. Hydraulic variables such as the near bed velocity, pressure, shear stress and normal stress ar...
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Bouabdellah Guemou, Abdelali Seddini, Abderrahmane Nekkache Ghenim
Pág. 298 - 304
The flow pattern around a bridge pier and the scouring phenomenon are very complicated. The basic mechanism causing local scour is the down-flow at the upstream face of the pier. It is understood that the horseshoe vortex is the key mechanism that leads ...
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Yi Han, Chibing Shen, Zhaobo Du and Haoran Tang
In the scramjet engine, the injection and mixing of fuel are the basis for organizing efficient combustion. The shock wave/jet shear layer interaction is one of the methods used to enhance fuel mixing in supersonic flow. In this research, the effect of t...
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