Results 1 to 10 of about 7,542,543 (282)

Grid approximation of singularly perturbed parabolic equations with moving boundary layers

open access: yesMathematical Modelling and Analysis, 2008
A grid approximation of a boundary value problem is considered for a singularly perturbed parabolic reaction‐diffusion equation in a domain with boundaries moving along the x‐axis in the positive direction.
Grigorii Shishkin
doaj   +1 more source

Wavelet Approach for Vibration Analysis of Fast Moving Load on a Viscoelastic Medium

open access: yesShock and Vibration, 2010
This paper analyses theoretically the response of a solid for fast moving trains using models related to real situations: a load moving in a tunnel and a load moving on a surface.
Piotr Koziol, Cristinel Mares
doaj   +1 more source

An approximate solution to a moving boundary problem with space–time fractional derivative in fluvio-deltaic sedimentation process

open access: yesAin Shams Engineering Journal, 2013
A mathematical model of the movement of the shoreline in a sedimentary ocean basin is discussed. The model includes space–time fractional derivative in Caputo sense and variable latent heat term.
Rajeev, Mohan Singh Kushwaha, Ajay Kumar
doaj   +1 more source

Moving boundary analysis of fractured shale gas reservoir

open access: yes工程科学学报, 2019
Shale gas reservoirs are extremely tight, their pores are mainly nano-micron size, and their gas flow resistance is greater than that of conventional gases.
Qian QI, Wei-yao ZHU
doaj   +1 more source

Moving boundary value problems for the wave equation

open access: yesJournal of Computational and Applied Mathematics, 2010
The authors consider boundary value problems for the wave equation posed in a time-dependent domain. The approach is based on a transform method for solving boundary value problems for integrable nonlinear partial differential equations (PDE) in two variables that has been applied extensively to the study of linear parabolic and elliptic equations.
Beatrice Pelloni, Dimitris A. Pinotsis
openaire   +3 more sources

The Modified Picard Iteration Method for Solving the Moving Boundary Problems with a Dissolution Term Encountered in the Drug Release Systems [PDF]

open access: yesChemical Process Design
The primary goal of this work is to develop an accurate analytical solution for the moving boundary problems with a dissolution term encountered in drug release from nanoporous structures.
Mahmoodreza Rahimi   +1 more
doaj   +1 more source

The effect of moving metal wall on microwave heating uniformity

open access: yes四川大学学报. 自然科学版, 2017
In this paper, the phase of electromagnetic field distribution in the cavity is regulated through movements of the metal wall of a rectangular waveguide, which can avoid the inhomogeneous heating caused by the uneven distribution of electromagnetic field
ZHANG Chun   +5 more
doaj  

Transport phenomena during aqueous corrosion of silicate glass—New insights from theoretical analysis of diffusion with a moving boundary

open access: yesnpj Materials Degradation
Incongruent corrosion of silicate glass is modeled as a moving-boundary transport problem, where the moving boundary contributes convective transport and the ion exchange provides diffusive transport.
Andrew L. Ogrinc   +2 more
doaj   +1 more source

Degenerate parabolic equations appearing in atmospheric dispersion of pollutants

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
Linear and nonlinear degenerate abstract parabolic equations with variable coefficients are studied. Here the equation and boundary conditions are degenerated on all boundary and contain some parameters.
Veli Shakhmurov, Aida Sahmurova
doaj   +1 more source

On classical formulation of Hele‐Shaw moving boundary problem for power‐law fluid

open access: yesMathematical Modelling and Analysis, 2002
A model of the Hele‐Shaw flow for power‐law fluid is proposed. A classical formulation of the corresponding moving boundary value problem is given. Hele-Shaw uždavinio ne-Niutono skysčiams klasikinis formulavimas Santrauka Pasiūlytas naujas ne ...
S. V. Rogosin
doaj   +1 more source

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