Results 41 to 50 of about 233,661 (218)

A generalized regularization scheme for solving singularly perturbed parabolic PDEs

open access: yesPartial Differential Equations in Applied Mathematics, 2022
Many problems in science and engineering can be modeled as singularly perturbed partial differential equations. Solutions to such problems are not generally continuous with respect to the perturbation parameter(s) and hence developing stable and ...
M.P. Rajan, G.D. Reddy
doaj   +1 more source

Elliptic reconstruction and a posteriori error estimates for fully discrete linear parabolic problems [PDF]

open access: yes, 2006
We derive a posteriori error estimates for fully discrete approximations to solutions of linear parabolic equations. The space discretization uses finite element spaces that are allowed to change in time. Our main tool is an appropriate adaptation of the
Lakkis, Omar, Makridakis, Charalambos
core   +1 more source

Space-Time Estimates of Mild Solutions of a Class of Higher-Order Semilinear Parabolic Equations in Lp

open access: yesNonautonomous Dynamical Systems, 2014
We establish the well-posedness of boundary value problems for a family of nonlinear higherorder parabolic equations which comprises some models of epitaxial growth and thin film theory. In order to achieve this result, we provide a unified framework for
Sandjo Albert N., Soh Célestin Wafo
doaj   +1 more source

Accelerated parameter-uniform numerical method for singularly perturbed parabolic convection-diffusion problems with a large negative shift and integral boundary condition

open access: yesResults in Applied Mathematics, 2023
The singularly perturbed parabolic convection–diffusion equations with integral boundary conditions and a large negative shift are studied in this paper.
Wondimagegnehu Simon Hailu   +1 more
doaj   +1 more source

Weak convergence of finite element approximations of linear stochastic evolution equations with additive noise II. Fully discrete schemes [PDF]

open access: yes, 2012
We present an abstract framework for analyzing the weak error of fully discrete approximation schemes for linear evolution equations driven by additive Gaussian noise.
A. Bouard de   +25 more
core   +2 more sources

A Strongly A-Stable Time Integration Method for Solving the Nonlinear Reaction-Diffusion Equation

open access: yesAbstract and Applied Analysis, 2015
The semidiscrete ordinary differential equation (ODE) system resulting from compact higher-order finite difference spatial discretization of a nonlinear parabolic partial differential equation, for instance, the reaction-diffusion equation, is highly ...
Wenyuan Liao
doaj   +1 more source

Finite difference scheme for singularly perturbed reaction diffusion problem of partial delay differential equation with nonlocal boundary condition

open access: yesAdvances in Difference Equations, 2021
This paper investigates singularly perturbed parabolic partial differential equations with delay in space, and the right end plane is an integral boundary condition on a rectangular domain.
Sekar Elango   +6 more
doaj   +1 more source

A novel collocation technique for parabolic partial differential equations

open access: yesAin Shams Engineering Journal, 2022
The present study focuses on an accurate, convergent, stable and efficient method for solving the parabolic Fisher’s type equation with three different cases.
M.J. Huntul   +3 more
doaj   +1 more source

STUDY OF AMMONIA VOLATILIZATION IN SOME NORTHERN IRAQ SOILS [PDF]

open access: yesMesopotamia Journal of Agriculture, 2010
Ammonia volatilization phenomena from urea fertilizer was studied by using three different textures of calcareous soil(loamy sand ,clay loamand clay) from Mosul city – northern Iraq, classified as calciorthids .Urea was added at three rates (100,200 and ...
M. Alobaidi, R. Al-Hamdany, M. Saaid
doaj   +1 more source

Method of lines transpose: High order L-stable O(N) schemes for parabolic equations using successive convolution [PDF]

open access: yes, 2016
We present a new solver for nonlinear parabolic problems that is L-stable and achieves high order accuracy in space and time. The solver is built by first constructing a single-dimensional heat equation solver that uses fast O(N) convolution.
Causley, Matthew F.   +3 more
core   +3 more sources

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