Results 61 to 70 of about 1,087,074 (217)
Modelling Underwater Acoustic Propagation using One-way Wave Equations
, 2022 The primary contribution of this paper is to characterize the propagation of acoustic signal carrying information through any medium and the interaction of the travelling acoustic signal with the surrounding medium. We will use the concept of damped harmonic oscillator to model the medium and Milne's oscillator technique to map the interaction of the ...
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Periodic and Solitary Travelling-Wave Solutions of an Extended Reduced Ostrovsky Equation
Symmetry, Integrability and Geometry: Methods and Applications, 2008 Periodic and solitary travelling-wave solutions of an extended reduced Ostrovsky equation are investigated. Attention is restricted to solutions that, for the appropriate choice of certain constant parameters, reduce to solutions of the reduced Ostrovsky
E. John Parkes
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Well-posedness of one-way wave equations and absorbing boundary conditions [PDF]
A one-way wave equation is a partial differential which, in some approximate sense, behaves like the wave equation in one direction but permits no propagation in the opposite one.
Halpern, L., Trefethen, L. N.
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, 2007 We derive a general master equation relating the gravitational-wave observables r and Omega_gw(f). Here r is the tensor-to-scalar ratio, constrained by cosmic-microwave-background (CMB) experiments; and Omega_gw(f) is the energy spectrum of primordial ...
A. A. Starobinsky +13 more
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A Force Method Model for Dynamic Analysis of Flat-Sag Cable Structures
Shock and Vibration, 2009 A new force method is proposed for analysing the dynamic behaviour of oscillating cables with small sags. The accepted dynamic model of such cables reduces to a partial differential equation (the equation of motion) and an integral equation (the ...
Xing Ma, John W. Butterworth
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Reflectionless boundary propagation formulas for partial wave solutions to the wave equation
Electronic Journal of Differential Equations, 1995 dimensions whose data is compactly supported at some initial time. For points outside a ball containing the initial support, we develop an outgoing wave condition, and associated one-way propagation formula, for the partial waves in the spherical ...
Jaime Navarro, Henry A. Warchall
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Synthetic Aperture Sonar Imaging via One-Way Wave Equations
, 2009 We develop an efficient algorithm for Synthetic Aperture Sonar imaging based on the one-way wave equations. The algorithm utilizes the operator-splitting method to integrate the one-way wave equations. The well-posedness of the one-way wave equations and the proposed algorithm is shown. A computational result against real field data is reported and the
Huynh, Quyen, Ito, Kazufumi
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Atomic soliton transmission and induced collapse in scattering from a narrow barrier
Scientific ReportsWe report systematic numerical simulations of the collision of a bright matter-wave soliton made of Bose-condensed alkali-metal atoms through a narrow potential barrier by using the three-dimensional Gross–Pitaevskii equation.
Francesco Lorenzi, Luca Salasnich
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JGE, 2020 The rock physics model is one effective yet challenging way to investigate the coal-seam gas potential in Indonesia. However, because of the complex conditions of the Coal-Seam Gas Reservoirs, it is difficult to establish models.
Harnanti Yogaputri Hutami +3 more
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Reactivity in the theory of the stationary nuclear fission wave
Ядерна фізика та енергетика, 2016 We studied axial motion of the stationary nuclear fission wave in the cylindrical core of the traveling wave reactor (known also as CANDLE) using an effective one-dimensional model of the fast spectrum reactor with uranium plutonium fuel.
O. M. Khotyayintseva +2 more
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