Article
Physics, Fluids & Plasmas
A. V. Yulin, D. A. Zezyulin
Summary: In this study, we theoretically investigate bright and dark solitons in a hybrid system with strong light-matter coupling. The results show that the two-component model of the system supports various types of moving solitons, including bright solitons on zero and nonzero background, as well as dark-gray and gray-gray solitons. These solutions are derived analytically by reducing the two-component problem to a single stationary equation. All the found solutions coexist under the same set of model parameters and approach different branches of the polariton dispersion relation in the linear limit. While bright solitons on a constant-amplitude pedestal are unstable, half-topological dark-gray and nontopological gray-gray solitons are stable within certain parametric ranges below the modulational instability threshold.
Review
Acoustics
Wah Yen Tey
Summary: The study evaluated a new equation KBE for calculating Doppler effect apparent frequencies and found underestimation issues at inclined angles. A corrected equation using Gaussian approximation was proposed as a more suitable general equation.
Article
Mathematics, Interdisciplinary Applications
Xue Sang, Zongguo Zhang, Hongwei Yang, Xiaofeng Han
Summary: In this paper, bidirectional propagation system local fractional equations are researched within the scope of the local fractional derivative theory. Exact traveling wave solutions of non-differentiable type are obtained, and it is proven that these equations can describe the interaction of fractal waves and has important significance in mathematical physics.
FRACTAL AND FRACTIONAL
(2022)
Article
Physics, Fluids & Plasmas
W. van Dijk
Summary: Explicit numerical solutions of the time-dependent Schrodinger equation are more efficient than implicit approaches, especially for higher-dimensional systems. This paper introduces a generalization of an explicit three-level method that obtains solutions with specified errors. Sample calculations demonstrate the algorithm's efficacy and stability.
Article
Geochemistry & Geophysics
F. Zyserman, L. B. Monachesi, A. H. Thompson, T. D'Biassi, L. Jouniaux, P. Gauzellino
Summary: This work presents numerical modelling of electroseismic conversions with electric field sources in the atmosphere. It shows that layered structures of conductivity anomalies can generate rotated electric fields at reservoir depths. However, the high-power dipole sources limit the practical application of these methods in hydrocarbon exploration. The research explores the potential use of environmental electric fields to create useful electroseismic conversions.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Engineering, Multidisciplinary
Neveen G. A. Farag, Ahmed H. Eltanboly, M. S. EL-Azab, S. S. A. Obayya
Summary: This paper exhaustively presents four numerical approaches for solving the 1D nonlinear Schrodinger equation and extensively compares their benefits and drawbacks. The split-step Fourier transform (SSFT) is found to exhibit the topmost robust potentiality, while other methods may generate higher errors or consume more processing time under certain conditions.
MATHEMATICAL PROBLEMS IN ENGINEERING
(2021)
Article
Acoustics
Iau-Teh Wang
Summary: Controlling the hazards caused by detonation waves to facilities is crucial in engineering design, with soil playing a protective role by reducing destructive effects. Shock wave energy affects soil dynamic characteristics and the area of the destructive zone, leading to crater formation at ground zero. Material failure analysis showed that high-intensity stress destabilized the soil body and was a key factor in material failure, providing insights for the design of soil-covering layers for explosion hazard control.
SHOCK AND VIBRATION
(2021)
Article
Geochemistry & Geophysics
Xi Feng, Haiming Zhang
Summary: In this paper, an exact closed-form solution for the displacement in an elastic half-space due to a buried point force is derived, which is a natural generalization of the classical 3-D Lamb's problem. The closed-form expressions, obtained through similar procedures as presented by Johnson, involve elementary functions and elliptic integrals, and show perfect agreement with numerical results from Johnson, conclusively validating the explicit formulae.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Environmental Sciences
Behzad Nazari, Dong-Jun Seo
Summary: This study extends previous analytical solutions and proposes two methods for solving the 1-D linear diffusive wave equation, which are both accurate and computationally efficient. These methods can be used in various routing applications to provide accurate explicit symbolic solutions for discrete locations such as known river forecast points.
WATER RESOURCES RESEARCH
(2021)
Article
Engineering, Mechanical
Nidish Narayanaa Balaji, Matthew R. W. Brake, Michael J. Leamy
Summary: This paper introduces two new approaches for directly assessing stability of nonlinear wave-based solutions, with application to jointed elastic bars. The first approach utilizes a wave-based method to construct analytical stability boundaries, accurately determining stability of periodic solutions and governing the response and stability of continuous systems without discretization. The second approach uses a perturbation eigenproblem residue (PER) to locate critical points where stability changes. The paper also discusses potential follow-on research opportunities and further development of the stability approaches.
NONLINEAR DYNAMICS
(2023)
Article
Chemistry, Physical
Haijun Yu, Ming Zou, Jinshan Sun, Yuntao Wang, Meng Wang
Summary: The length of pre-cracks critically affects the initiation and propagation mechanism of cracks. P-waves and S-waves are crucial in models with short pre-cracks, while Rayleigh waves significantly contribute to crack propagation in models with long pre-cracks.
Article
Multidisciplinary Sciences
Fabian Limberger, Georg Ruempker, Michael Lindenfeld, Hagen Deckert
Summary: In order to address the impact of ground vibrations caused by wind turbines on seismic observations, we have developed the first numerical model to predict the seismic wavefield generated by wind farms, taking into account factors such as wavefield interferences, surface topography, and attenuation.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Jose Luis Diaz Palencia, Saeed ur Rahman, Julian Roa Gonzalez, Abraham Otero
Summary: The presented article proposes a new model for flame propagation in porous medium, using a p-Laplacian operator and a nonlinear reaction term. The analysis shows boundedness, uniqueness, stability, and asymptotic profiles of weak solutions and travelling wave solutions. The obtained upper solutions are particularly applicable for propagating flames with compactly supported initial pressure-temperature distributions.
RESULTS IN PHYSICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Hieu Nguyen, Richard Tsai
Summary: We propose a deep learning approach to improve the accuracy of a given inaccurate coarse solver for wave propagation in media with multiscale wave speed. By generating training data using a computationally efficient coarse solver and another accurate solver, we utilize neural networks to approximate the nonlinear dependence of wave propagation on the wave speed. The combination of the neural-network-enhanced coarse solver and the parareal algorithm improves the stability and accuracy of the wave propagation simulation.
JOURNAL OF COMPUTATIONAL PHYSICS
(2023)
Article
Engineering, Civil
V Zago, L. J. Schulze, G. Bilotta, N. Almashan, R. A. Dalrymple
Summary: The proposed method based on kernel gradient correction effectively addresses the issue of excessive nonphysical energy dissipation in Smoothed Particle Hydrodynamics (SPH) when modeling free surface waves. By ensuring momentum conservation through the use of an averaged correction matrix, the drawbacks of kernel gradient corrections, such as instabilities, are overcome. Experimental results demonstrate advantages in both result quality and simulation time compared to approaches based on large smoothing factors.
COASTAL ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Robert Herrendoerfer, Ylona van Dinther, Taras Gerya, Luis Angel Dalguer
Article
Geochemistry & Geophysics
Percy Galvez, Luis A. Dalguer, Jean-Paul Ampuero, Domenico Giardini
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2016)
Correction
Geochemistry & Geophysics
M. Causse, L. A. Dalguer, P. M. Mai
GEOPHYSICAL JOURNAL INTERNATIONAL
(2016)
Article
Geochemistry & Geophysics
Ruth A. Harris, Michael Barall, Brad Aagaard, Shuo Ma, Daniel Roten, Kim Olsen, Benchun Duan, Dunyu Liu, Bin Luo, Kangchen Bai, Jean-Paul Ampuero, Yoshihiro Kaneko, Alice-Agnes Gabriel, Kenneth Duru, Thomas Ulrich, Stephanie Wollherr, Zheqiang Shi, Eric Dunham, Sam Bydlon, Zhenguo Zhang, Xiaofei Chen, Surendra Nadh Somala, Christian Pelties, Josue Tago, Victor Manuel Cruz-Atienza, Jeremy Kozdon, Eric Daub, Khurram Aslam, Yuko Kase, Kyle Withers, Luis Dalguer
SEISMOLOGICAL RESEARCH LETTERS
(2018)
Article
Geochemistry & Geophysics
Youbing Zhang, Luis A. Dalguer, Seok Goo Song, John Clinton, Domenico Giardini
GEOPHYSICAL JOURNAL INTERNATIONAL
(2015)
Article
Geochemistry & Geophysics
P. Galvez, J. -P. Ampuero, L. A. Dalguer, S. N. Somala, T. Nissen-Meyer
GEOPHYSICAL JOURNAL INTERNATIONAL
(2014)
Editorial Material
Geochemistry & Geophysics
Luis A. Dalguer, Steven M. Day, Gail M. Atkinson, Rui Chen
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2021)
Article
Geochemistry & Geophysics
L. A. Dalguer, H. Wu, Y. Matsumoto, K. Irikura, T. Takahama, M. Tonagi
PURE AND APPLIED GEOPHYSICS
(2020)
Article
Geochemistry & Geophysics
Luis A. Dalguer, Yoshimitsu Fukushima, Kojiro Irikura, Changjiang Wu, Philippe Renault
PURE AND APPLIED GEOPHYSICS
(2020)
Proceedings Paper
Geochemistry & Geophysics
Seok Goo Song, Luis A. Dalguer
BEST PRACTICES IN PHYSICS-BASED FAULT RUPTURE MODELS FOR SEISMIC HAZARD ASSESSMENT OF NUCLEAR INSTALLATIONS
(2018)
Proceedings Paper
Geochemistry & Geophysics
Luis A. Dalguer, Yoshlmitsu Fukushima, Kojiro Irikura, Changjiang Wu
BEST PRACTICES IN PHYSICS-BASED FAULT RUPTURE MODELS FOR SEISMIC HAZARD ASSESSMENT OF NUCLEAR INSTALLATIONS
(2018)
Article
Geochemistry & Geophysics
Seok Goo Song, Luis A. Dalguer
PURE AND APPLIED GEOPHYSICS
(2017)
Article
Geochemistry & Geophysics
Gulum Tanircan, Luis Dalguer, Feyza Nur Bekler, Nurcan Meral Ozel
PURE AND APPLIED GEOPHYSICS
(2017)
Article
Geochemistry & Geophysics
Luis A. Dalguer, Yoshimitsu Fukushima, Kojiro Irikura, Changjiang Wu
PURE AND APPLIED GEOPHYSICS
(2017)
Proceedings Paper
Engineering, Industrial
S. Rajan, B. Holtschoppen, L. A. Dalguer, C. Butenweg, S. Klinkel
PROCEEDINGS OF ISMA2016 INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING AND USD2016 INTERNATIONAL CONFERENCE ON UNCERTAINTY IN STRUCTURAL DYNAMICS
(2016)