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An Integral Equation Formulation for Two-Phase Flow and Other Nonlinear Flow Problems Through Porous Media [PDF]

open access: greenSPE Annual Technical Conference and Exhibition, 1990
ABSTRACT Many flow problems encountered in petroleum reservoir engineering are characterized by nonlinearities and are difficult to solve analytically. The concept of a relative mass flow rate function is used to arrive at an integral equation formulation for some of these nonlinear flow problems.
Chen, Z.   +2 more
  +6 more sources

Legendre-Gauss-Lobatto collocation method for solving multi-dimensional systems of mixed Volterra-Fredholm integral equations

open access: yesAIMS Mathematics, 2023
Integral equations play a crucial role in many scientific and engineering problems, though solving them is often challenging. This paper addresses the solution of multi-dimensional systems of mixed Volterra-Fredholm integral equations (SMVF-IEs) by means
A. Z. Amin   +5 more
doaj   +2 more sources

A new fourth-order integrable nonlinear equation: breather, rogue waves, other lump interaction phenomena, and conservation laws [PDF]

open access: yesAdvances in Difference Equations, 2021
AbstractIn this study, we investigate a new fourth-order integrable nonlinear equation. Firstly, by means of the efficient Hirota bilinear approach, we establish novel types of solutions which include breather, rogue, and three-wave solutions. Secondly, with the aid of Lie symmetry method, we report the invariance properties of the studied equation ...
Dumitru Baleanu   +2 more
openaire   +2 more sources

An Innovative Approach to Nonlinear Fractional Shock Wave Equations Using Two Numerical Methods

open access: yesMathematics, 2023
In this research, we propose a combined approach to solving nonlinear fractional shock wave equations using an Elzaki transform, the homotopy perturbation method, and the Adomian decomposition method. The nonlinear fractional shock wave equation is first
Meshari Alesemi
doaj   +1 more source

A study on Darboux polynomials and their significance in determining other integrability quantifiers: A case study in third-order nonlinear ordinary differential equations

open access: yesPramana, 2023
In this paper, we present a method of deriving extended Prelle-Singer method's quantifiers from Darboux Polynomials for third-order nonlinear ordinary differential equations. By knowing the Darboux polynomials and its cofactors, we extract the extended Prelle-Singer method's quantities without evaluating the Prelle-Singer method's determining equations.
R Mohanasubha, M Senthilvelan
openaire   +2 more sources

Using analytical methods for finding the approximate solutions to fractional differential equations

open access: yesInternational Journal of Thermofluids, 2023
This essay focuses on studying the nonlinear fractional integral equation. Various methods, including Akbari-Ganji's Method (AGM), Homotopy Perturbation Method (HPM), and Vibrational Iteration Method (VIM), are utilized to obtain its solution.
Reza Iranmanesh   +7 more
doaj   +1 more source

Sixth-Kind Chebyshev and Bernoulli Polynomial Numerical Methods for Solving Nonlinear Mixed Partial Integrodifferential Equations with Continuous Kernels

open access: yesJournal of Function Spaces, 2023
In the present paper, a new efficient technique is described for solving nonlinear mixed partial integrodifferential equations with continuous kernels.
Abeer M. Al-Bugami   +2 more
doaj   +1 more source

Free Vibration Analysis of Nonlinear Structural-Acoustic System with Non-Rigid Boundaries Using the Elliptic Integral Approach

open access: yesMathematics, 2020
This study addresses the free vibration analysis of nonlinear structural-acoustic system with non-rigid boundaries. In practice, the boundaries of a panel–cavity system are usually imperfectly rigid.
Yiu-yin Lee
doaj   +1 more source

New coincidence point results for generalized graph-preserving multivalued mappings with applications

open access: yesAdvances in Difference Equations, 2021
This research aims to investigate a novel coincidence point (cp) of generalized multivalued contraction (gmc) mapping involved a directed graph in b-metric spaces (b-ms).
Hasanen A. Hammad   +2 more
doaj   +1 more source

Exact conserved quantities on the cylinder II: off-critical case [PDF]

open access: yes, 2003
With the aim of exploring a massive model corresponding to the perturbation of the conformal model [hep-th/0211094] the nonlinear integral equation for a quantum system consisting of left and right KdV equations coupled on the cylinder is derived from an
A. Klümper   +33 more
core   +3 more sources

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