Results 1 to 10 of about 61,137 (267)

A finite differences MATLAB code for the numerical solution of second order singular perturbation problems

open access: yesJournal of Computational and Applied Mathematics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Giuseppina Settanni, Pierluigi Amodio
exaly   +3 more sources

ON THE THIRD ORDER SOLUTION OF KdV EQUATION BY USING HOMOTOPY PERTURBATION METHOD

open access: yesBarekeng, 2023
In this research we discussed about the solution of the KdV equation using Homotopy Perturbation method. The KdV equation that describing water wave equation solved  by using the mixing method between Homotopy and Perturbation method.
Mashuri Mashuri   +2 more
doaj   +1 more source

A simple second order thermodynamic perturbation theory for associating fluids

open access: yesCondensed Matter Physics, 2021
An approximation within Wertheim's second order perturbation theory is proposed which allows for the development of a general solution for pure component fluids with an arbitrary number and functionality of association sites.
B. D. Marshall
doaj   +1 more source

SECOND-ORDER SOLUTIONS OF COSMOLOGICAL PERTURBATION IN THE MATTER-DOMINATED ERA [PDF]

open access: yesThe Astrophysical Journal, 2012
We present the growing mode solutions of cosmological perturbations to the second order in the matter dominated era. We also present several gauge-invariant combinations of perturbation variables to the second order in most general fluid context. Based on the solutions we study the Newtonian correspondence of relativistic perturbations to the second ...
Hwang, Jai-chan   +2 more
openaire   +2 more sources

Stability Analysis of a Strongly Displacement Time-Delayed Duffing Oscillator Using Multiple Scales Homotopy Perturbation Method [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2018
In the present study, some perturbation methods are applied to Duffing equations having a displacement time-delayed variable to study the stability of such systems.
Yusry El-Dib
doaj   +1 more source

Second-order perturbation solution and analysis of nonlinear surface waves

open access: yesActa Physica Sinica, 2022
The properties of ultrasonic nonlinear surface wave in the quasilinear region are investigated. In this work the governing equation of particle displacement potential is employed for surface wave in isotropic elastic solid with quadratic nonlinearity.
Sheng-Yang Zeng   +4 more
openaire   +1 more source

Homotopy perturbation method for Ozone decomposition of the second order in aqueous solutions [PDF]

open access: yesJournal of Applied Mathematics, Statistics and Informatics, 2015
Abstract In this article the problem of mass transfer of ozone of the second order from a gaseous phase into an aqueous phase has been studied. Homotopy perturbation method is employed to derive an analytical approximation to the solutions of the system of differential equations governing on the problem.
Ayati, Z., Biazar, J., Partovi, M.
openaire   +1 more source

On the non-uniqueness of the solution to a boundary value problem of heat conduction with a load in the form of a fractional derivative [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
The paper deals with the second boundary value problem for the loaded heat equation in the first quadrant.
M.T. Kosmakova   +2 more
doaj   +3 more sources

Stability Analysis of a Damped Nonlinear Wave Equation [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2020
The current manuscript is concerned with extracting an analytical approximate periodic solution of a damped cubic nonlinear Klein-Gordon equation. The Riemann-Liouville fractional calculus is utilized to obtain an analytic approximate solution.
Yusry O. El-Dib   +2 more
doaj   +1 more source

Analytical study of the vibrating double-sided quintic nonlinear nano-torsional actuator using higher-order Hamiltonian approach

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
In this work, we investigate and apply higher-order Hamiltonian approach (HA) as one of the novelty techniques to find out the approximate analytical solution for vibrating double-sided quintic nonlinear nano-torsional actuator.
Gamal Mohamed Ismail   +3 more
doaj   +1 more source

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