Results 21 to 30 of about 6,655,493 (368)

An improved wave equation of fractured-porous media for predicting reservoir permeability

open access: yesFrontiers in Earth Science, 2023
The wave characteristics of fractured-porous media can be utilized for permeability identification; however, further research is necessary to enhance the accuracy of this identification. A novel wave equation for fractured-porous media is formulated, and
Wanjin Zhao   +3 more
doaj   +1 more source

Applications of exact traveling wave solutions of Modified Liouville and the Symmetric Regularized Long Wave equations via two new techniques

open access: yesResults in Physics, 2018
In this current work, we employ novel methods to find the exact travelling wave solutions of Modified Liouville equation and the Symmetric Regularized Long Wave equation, which are called extended simple equation and exp(-Ψ(ξ))-expansion methods.
Dianchen Lu, Aly R. Seadawy, Asghar Ali
doaj   +1 more source

Semi-linear wave equations [PDF]

open access: yesBulletin of the American Mathematical Society, 1992
We survey existence and regularity results for semi-linear wave equations. In particular, we review the recent regularity results for the u 5 {u^5} -Klein Gordon equation by Grillakis and this author and give a self-contained, slightly simplified proof.
openaire   +2 more sources

New soliton solution to the longitudinal wave equation in a magneto-electro-elastic circular rod

open access: yesResults in Physics, 2018
This paper examines the effectiveness of an integration scheme which called the extended trial equation method (ETEM) in exactly solving a well-known nonlinear equation of partial differential equations (PDEs).
Aly R. Seadawy, Jalil Manafian
doaj   +1 more source

Nonautonomous Retarded Wave Equations

open access: yesJournal of Mathematical Analysis and Applications, 2001
In the present paper the authors study the existence and uniqueness of \(C^2\) solutions to nonautonomous retarded wave equations with memory effects. To this end the authors first tackle the well-posedness problem for a class of Volterra nonautonomous retarded differential equations in a Banach space.
RHANDI, Abdelaziz, MANIAR L.
openaire   +3 more sources

On the Fractional Wave Equation

open access: yesMathematics, 2020
In this paper we study the time-fractional wave equation of order 1
Francesco Iafrate, Enzo Orsingher
doaj   +1 more source

GW170817: Measurements of Neutron Star Radii and Equation of State. [PDF]

open access: yesPhysical Review Letters, 2018
On 17 August 2017, the LIGO and Virgo observatories made the first direct detection of gravitational waves from the coalescence of a neutron star binary system.
B. Abbott   +499 more
semanticscholar   +1 more source

Approximate Solutions of the Damped Wave Equation and Dissipative Wave Equation in Fractal Strings

open access: yesFractal and Fractional, 2019
In this paper, we apply the local fractional Laplace variational iteration method (LFLVIM) and the local fractional Laplace decomposition method (LFLDM) to obtain approximate solutions for solving the damped wave equation and dissipative wave equation ...
Dumitru Baleanu, Hassan Kamil Jassim
doaj   +1 more source

Stability analysis of the soliton solutions for the generalized quintic derivative nonlinear Schrödinger equation

open access: yesResults in Physics, 2016
The propagation of hydrodynamic wave packets and media with negative refractive index is studied in a quintic derivative nonlinear Schrödinger (DNLS) equation.
Chen Yue, Aly Seadawy, Dianchen Lu
doaj   +1 more source

One-Way Wave Equation Derived from Impedance Theorem

open access: yesAcoustics, 2020
The wave equations for longitudinal and transverse waves being used in seismic calculations are based on the classical force/moment balance. Mathematically, these equations are 2nd order partial differential equations (PDE) and contain two solutions with
Oskar Bschorr, Hans-Joachim Raida
doaj   +1 more source

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