Results 11 to 20 of about 1,372,465 (281)

On the time-dependent parabolic wave equation [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
One approach to the study of wave propagation in a restricted domain is to approximate the reduced Helmholtz equation by a parabolic wave equation. Here we consider wave propagation in a restricted domain modelled by a parabolic wave equation whose ...
Arthur D. Gorman
doaj   +2 more sources

Maximum norm a posteriori error estimation for parabolic problems using elliptic reconstructions [PDF]

open access: yes, 2013
A semilinear second-order parabolic equation is considered in a regular and a singularly perturbed regime. For this equation, we give computable a posteriori error estimates in the maximum norm.
Linss, Torsten, Kopteva, Natalia
core   +4 more sources

Analytical Expansions for Parabolic Equations [PDF]

open access: yesSIAM Journal on Applied Mathematics, 2013
We consider the Cauchy problem associated with a general parabolic partial differential equation in $d$ dimensions. We find a family of closed-form asymptotic approximations for the unique classical solution of this equation as well as rigorous short-time error estimates.
Lorig M.   +2 more
openaire   +3 more sources

A family of difference schemes for fourth order parabolic partial differential equations [PDF]

open access: yes, 1983
A family of methods is developed for the numerical solution of fourth order parabolic partial differential equations in one- and two-space variables.
Khaliq, AQM, Twizell, EH
core   +4 more sources

Finite element multistep multideriavative schemes for parabolic equations [PDF]

open access: yes, 1976
The linear, homogeneous, parabolic equation is solved by applying finite element discretizations in space and A0 —stable, linear multistep, multiderivative (L.M.S.D.) methods in time. Such schemes are unconditionally stable. An error analysis establishes
Moore, P
core   +4 more sources

An Approximation of Ultra‐Parabolic Equations [PDF]

open access: yesAbstract and Applied Analysis, 2012
The first and second order of accuracy difference schemes for the approximate solution of the initial boundary value problem for ultra‐parabolic equations are presented. Stability of these difference schemes is established. Theoretical results are supported by the result of numerical examples.
Ashyralyev, Allaberen, Yılmaz, Serhat
openaire   +4 more sources

PARABOLIC EQUATIONS [PDF]

open access: yesProceedings of the National Academy of Sciences, 1957
Beweis zweier Sätze, die gestatten, auf die Stetigkeit der Lösungen parabolischer (elliptischer) Differentialgleichungen zu schließen, wenn die Lösung für \(t=0\) (auf dem Rande) beschränkt sein soll.
openaire   +2 more sources

Numerical Solution of Parabolic Equations by the Box Scheme [PDF]

open access: yes, 1973
The box scheme proposed by H. B. Keller is a numerical method for solving parabolic partial differential equations. We give a convergence proof of this scheme for the heat equation, for a linear parabolic system, and for a class of nonlinear parabolic ...
Fong, Kirby William
core   +1 more source

Fast computation of the nonlocal boundary condition in finite difference parabolic equation radiowave propagation simulations [PDF]

open access: yes, 2008
Finite difference parabolic equation method (FD-PEM) codes using a nonlocal boundary condition to model radiowave propagation over electrically large domains, require the computation of time consuming spatial convolution integrals. For the first time, we
Mias, Christos
core   +1 more source

Higher order parallel splitting methods for parabolic partial differential equations [PDF]

open access: yes, 1995
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis develops two families of numerical methods, based upon new rational approximations to the matrix exponential function, for solving second-order ...
Taj, Malik Shahadat Ali
core   +6 more sources

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