Azimuthally Anisotropic 3D Velocity Continuation by William Burnett, Sergey Fomel

“…This description turns out to be of a wave propagation process, in which images change along a velocity axis. …”
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Optimized Weighted Essentially Nonoscillatory Third-Order Schemes for Hyperbolic Conservation Laws by A. R. Appadu, A. A. I. Peer

“…We carry out some numerical experiments dealing with wave propagation based on the 1D linear advection and 1D Burger’s equation at some different cfl numbers and show that the optimal cfl does indeed cause less dispersion, less dissipation, and lower L1 errors. …”
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Impact of Ship Motions on Maritime Radio Links by William Hubert, Yvon-Marie Le Roux, Michel Ney, Anne Flamand

“…This tool includes a deterministic two-ray model for radio-wave propagation over the sea surface. The geometrical 3D engine for ship motions has the advantage to be compatible with any propagation model and antenna structure.…”
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Finite-Difference Time Domain Techniques Applied to Electromagnetic Wave Interactions with Inhomogeneous Plasma Structures by Julio L. Nicolini, José Ricardo Bergmann

“…Motivated by the emerging field of plasma antennas, electromagnetic wave propagation in and scattering by inhomogeneous plasma structures are studied through finite-difference time domain (FDTD) techniques. …”
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Spatial localization and diffusion of Dirac particles and waves induced by random temporal medium variations by Seulong Kim, Kihong Kim

“…Abstract Wave propagation in time-varying media has attracted significant attention for its innovative potential to control wave-matter interactions and to develop versatile active materials. …”
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Vibration Characteristics of Subway Tunnel Structure in Viscous Soil Medium by Dawei Ren, Shengjun Shao, Xiaoshan Cao, Yifeng Hu

“…Based on research on subway tunnels in a viscous soil medium, this paper establishes the vibration equation of a tunnel structure by using the theory of moderately thick cylindrical shells and the method of wave propagation. The soil around the tunnel is represented in simplified form as an isotropic viscoelastic medium to obtain the equation of motion of the soil, and the vibration control equation of the tunnel under the influence of viscous soil is obtained by coupling. …”
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Modified Finite Difference Schemes on Uniform Grids for Simulations of the Helmholtz Equation at Any Wave Number by Hafiz Abdul Wajid, Naseer Ahmed, Hifza Iqbal, Muhammad Sarmad Arshad

“…All of these modified finite difference approximations provide exact solutions at the nodes of the uniform grid for the second derivative present in the Helmholtz equation and the first derivative in the radiation boundary conditions for wave propagation. The most important feature of the modified schemes is that they work for large as well as low wave numbers, without the common requirement of a very fine mesh size. …”
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Effects of Concrete on Propagation Characteristics of Guided Wave in Steel Bar Embedded in Concrete by Zhupeng Zheng, Ying Lei

“…In this paper, dispersion equations of longitudinal wave propagation in reinforced concrete member are investigated for the purpose of monitoring steels embedded in concrete. …”
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Track-Before-Detect Procedures in AM Radio-Based Passive Radar by Yang Li, Hong Ma, Yuntao Wu, Li Cheng

“…Two types of linear equations according to the simplified radio wave propagation model are formulated, which is the key point of the proposed method. …”
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Preliminary study on the explosive performance of coal dust and prospects for engineering applications by Jing Guo, Shirong Ge

“…High-frequency pressure sensors assessed pressure dynamics and detonation wave propagation, complemented by numerical simulations for accuracy. …”
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An Efficient Semianalytical Modal Analysis of Rectangular Waveguides Containing Metamaterials with Graded Inhomogeneity by Qianru Weng, Qian Lin, Haifeng Wu

“…Below-cutoff backward wave propagation is observed in waveguides filled with graded refractive-index metamaterials, which provides a new approach for waveguide miniaturization.…”
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STUDY ON THE ACOUSTO-STRUCTURAL COUPLING OF THIN CYLINDRICAL HYDRAULIC PIPE by XIE MiaoXia, GUO Ruifeng, LI LiXia, ZHANG LinJie

“…In thin hydraulic pipes,the interaction between acoustic field in the fluid and structural wave field may results in more energy loss.In order to make clear the energy loss mechanism of this kind of cylindrical pipe,an analytic study on the acousto-structural coupling of a thin cylindrical pipe is carried out using the impedance-mobility approach（ IMA） in this work.Coupled equations for describing such acousto-structural coupling are derived from the wave equation and the dynamic equation of a cylindrical shell.In deriving the dynamic equation of a cylindrical shell,wave propagation involving distortion of the cross section is considered,which is very different from general researches about hydraulic vibration.In order to validate the IMA model developed,the acousto-structural response of a cylindrical pipe filled with air is calculated using IMA and FEA,respectively,which reveals the good agreement between IMA and FEA results.…”
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Reliability Analysis of Damaged Beam Spectral Element with Parameter Uncertainties by M. R. Machado, J. M. C. Dos Santos

“…The paper examines the influence of uncertainty parameters on the wave propagation responses at high frequencies for a damaged beam structure in the structural reliability context. …”
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On Semianalytical Study of Fractional-Order Kawahara Partial Differential Equation with the Homotopy Perturbation Method by Muhammad Sinan, Kamal Shah, Zareen A. Khan, Qasem Al-Mdallal, Fathalla Rihan

“…We next triggered different parametric effects (such as x, t, and so on) on the structure of the solitary wave propagation, demonstrating that the breadth and amplitude of the solitary wave potential may alter when these parameters are changed. …”
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The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime by Alessandro Cunsolo

“…This specifically involves some solid-like features such as the onset of shear wave propagation, a sound velocity surprisingly similar to the one of ice, and an anomalously low sound absorption coefficient. …”
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Parabolic Equation Modeling of Propagation over Terrain Using Digital Elevation Model by Xiao-Wei Guan, Li-Xin Guo, Ya-Jiao Wang, Qing-Liang Li

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Metasurface-Cladded Waveguide Filled With Magnetized Plasma by Mirko Magarotto, Luca Schenato, Marco Santagiustina, Andrea Galtarossa, Antonio-Daniele Capobianco

“…This paper analyses electromagnetic (EM) wave propagation within a metasurface-cladded waveguide filled with magnetized plasma. …”
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Nondestructive Testing of Advanced Concrete Structure during Lifetime by Lubos Pazdera, Libor Topolar, Jaroslav Smutny, Kristyna Timcakova

“…The impact echo method is based on physical laws of elastic stress wave propagation in solids generated by mechanical impulse. …”
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Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma by Douglas Letsholathebe, Kgakgamatso M. Mphale, Samuel Chimidza

“…Accurately measured momentum transfer collision frequency and electron density for fire plasma enable correct simulation of electromagnetic wave propagation in the medium. The simulation is essential for designing high-performance systems suitable for the environment. …”
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Free and Forced Vibrations of Periodic Multispan Beams by Liping Zhu, Isaac Elishakoff, Y.K. Lin

“…In this study, the following two topics are considered for uniform multispan beams of both finite and infinite lengths with rigid transversal and elastic rotational constraints at each support: (a) free vibration and the associated frequencies and mode shapes; (b) forced vibration under a convected harmonic loading. The concept of wave propagation in periodic structures of Brillouin is utilized to investigate the wave motion at periodic supports of a multispan beam. …”
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