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Chih-Hua Chang
In this article, a three-dimensional, fully nonlinear potential wave model is applied based on a curvilinear grid system. This model calculates the wave action on a fully/partially submerged vertical cylinder with or without a hollow zone. As basic verif...
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Jiajia Chen, Xieyu Chen and Zhen Tian
This work provides a new strategy for the development of tunable terahertz chiral devices and will find applications in polarization-dependent fields.
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Mohammad Shaiful Islam, Naoki Akita, Tomoaki Nakamura, Yong-Hwan Cho and Norimi Mizutani
In this paper, a hydraulic model experiment was conducted to investigate the mechanism of longshore sediment transport on a sloping beach of 1:7 using a circular wave tank equipped with a spiral wave maker. The experimental results revealed that cross-sh...
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Huan Wang, Erzheng Fang, Mingze Wu, Lianjin Hong and Zongru Li
When an underwater target moves in viscous fluid, it may cause the periodic movement of the surrounding fluid and generate ultra-low-frequency (ULF) gravity waves. The initial domain of the gravitational surface wave propagating above the moving target i...
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Georgios Valsamos,Folco Casadei,George Solomos
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Nazile B. Disibuyuk, Oguz Yilmaz, Alexander Korobkin and Tatyana Khabakhpasheva
The problem of ice loads acting on multiple vertical cylinders of circular cross-sections frozen in an ice cover of infinite extent is studied. The loads are caused by a flexural-gravity wave propagating in the ice cover towards the rigid bottom-mounted ...
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Giuseppe Tripepi, Francesco Aristodemo and Paolo Veltri
A two-dimensional (2D) laboratory investigation on the horizontal and vertical hydrodynamic forces induced by tsunami-like solitary waves on horizontal circular cylinders placed on a rigid sea bed is presented. A series of 30 physical model tests was con...
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Yuhao Wang, Hongxiao Dong, Tong Dong and Xiangyun Xu
In naval warfare, underwater explosion (UNDEX) shock waves significantly influence the stability and safety of the pressure hull structure of the equipment. This study investigated the unique dynamic buckling of a closed cylindrical shell subjected to a ...
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Huu Phu Nguyen, Chien Ming Wang, Brian von Herzen and Chenxuan Huang
This paper investigates the hydroelastic response of a submersible circular ring structure, designed for offshore seaweed cultivation, under wave action and during the submergence process. The ring structure comprises two circular HDPE pipes connected to...
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Jae-Hyuk Lee, Jae-Hoon Ryu, Eun-Sung Lee, Hyung-Seok Han and Jeong-Yeol Choi
A noncircular engine cross-section could provide great flexibility in the integration of propulsion into the airframe. In this work, a tri-arc RDE was constructed and tested as an example of noncircular cross-sectioned RDE. The operational characteristic...
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George S. Liodakis, Theodoros N. Kapetanakis, Melina P. Ioannidou, Anargyros T. Baklezos, Nikolaos S. Petrakis, Christos D. Nikolopoulos and Ioannis O. Vardiambasis
A complex cylindrical structure consisting of a group of parallel stratified circular lossy dielectric cylinders, embedded in a dielectric circular cylindrical region and surrounded by unbounded dielectric space, is considered in this paper. The scatteri...
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Franklin Drummond and Gregory Huff
An Unmanned Aerial System (UAS) has been developed which is based on an aerodynamically functionalized planar wideband antenna. The antenna utilizes a planar circular dipole metallization scheme. The aerodynamic structure implements a planform similar to...
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Andrew J. Hull, Daniel Perez and Donald L. Cox
This paper derives an analytical model of a straight beam with a T-shaped cross section for use in the high-frequency range, defined here as approximately 1 to 35 kHz. The web, the right part of the flange, and the left part of the flange of the T-beam a...
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Yang Zhang, Qiang Gui, Yuzheng Yang and Wei Li
An efficient graphical acoustic computing (GRACO) method is introduced. Referring to the rendering of semi-transparent objects, the depth peeling (DP) technique is compounded with the GRACO method, forming a combined GRACO and DP method (GRACO?DP) to con...
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Sarat Chandra Mohapatra and C. Guedes Soares
A hydroelastic model associated with the interaction between a surface wave and a floating circular structure connected with mooring lines in finite water depth is developed using BIEM. The BIEM solution is achieved using free surface Green?s function an...
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Tarek S. Abdou, Rola Saad and Salam K. Khamas
This paper presents a novel 28 GHz circularly polarized rectangular dielectric-resonator antenna (DRA) array for millimeter-wave (mmWave) off-body applications. A feed network incorporating cross slots was utilized in the rectangular DRA design to realiz...
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Konstantinos Tserpes, Kosmas Papadopoulos, Selen Unaldi and Laurent Berthe
An explicit 3D Finite Element (FE) model was developed in the LS-Dyna code to simulate the laser shock paint stripping on aircraft aluminum substrates. The main objective of the model is to explain the physical mechanisms of the laser shock stripping pro...
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Syeda Fizzah Jilani, Oluyemi P. Falade, Tom Wildsmith, Paul Reip and Akram Alomainy
This paper demonstrates a design, fabrication and performance evaluation of a frequency selective 60-GHz flexible metasurface in order to facilitate an unobstructed, secure, and low-loss high-frequency signal propagation. The high-attenuation 60 GHz mill...
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Xiaoguo Zhou, Qingdian Jiang, Yan Wang, Linfeng Chen, Shuqi Wang and Kunpeng Wang
This paper presents the characteristics of the heave motion responses and hydrodynamic forces of a horizontal floating circular cylinder during a wave?current interaction. A two-dimensional numerical model based on the CFD (Computational Fluid Dynamics) ...
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