Results 31 to 40 of about 1,171,815 (343)

Higher integrability for anisotropic parabolic systems of p-Laplace type

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we consider anisotropic parabolic systems of pp-Laplace type. The model case is the parabolic pi{p}_{i}-Laplace system ut−∑i=1n∂∂xi(∣Diu∣pi−2Diu)=0{u}_{t}-\mathop{\sum }\limits_{i=1}^{n}\frac{\partial }{\partial {x}_{i}}({| {D}_{i}u| }^{{
Mons Leon
doaj   +1 more source

Holistic finite differences accurately model the dynamics of the Kuramoto-Sivashinsky equation [PDF]

open access: yes, 2000
We analyse the nonlinear Kuramoto-Sivashinsky equation to develop an accurate finite difference approximation to its dynamics. The analysis is based upon centre manifold theory so we are assured that the finite difference model accurately models the ...
MacKenzie, T., Roberts, A. J.
core   +3 more sources

VaMpy: A Python Package to Solve 1D Blood Flow Problems

open access: yesJournal of Open Research Software, 2017
Finite-differences methods such as the Lax-Wendroff method (LW) are commonly used to solve 1D models of blood flow. These models solve for blood flow and lumen area and are useful in disease research, such as hypertension and atherosclerosis, where flow ...
Alexandra K. Diem, Neil W. Bressloff
doaj   +1 more source

Domain decomposition finite element/finite difference method for the conductivity reconstruction in a hyperbolic equation

open access: yes, 2015
We present domain decomposition finite element/finite difference method for the solution of hyperbolic equation. The domain decomposition is performed such that finite elements and finite differences are used in different subdomains of the computational ...
Beilina, L.
core   +1 more source

Method of lines and finite difference schemes with the exact spectrum for solution the hyperbolic heat conduction equation

open access: yesMathematical Modelling and Analysis, 2011
This paper is concerning with the 1-D initial–boundary value problem for the hyperbolic heat conduction equation. Numerical solutions are obtained using two discretizations methods – the finite difference scheme (FDS) and the difference scheme with the ...
Harijs Kalis, Andris Buikis
doaj   +1 more source

Stable and Convergent Finite Difference Schemes on NonuniformTime Meshes for Distributed-Order Diffusion Equations

open access: yesMathematics, 2021
In this work, stable and convergent numerical schemes on nonuniform time meshes are proposed, for the solution of distributed-order diffusion equations.
M. Luísa Morgado   +2 more
doaj   +1 more source

Regularization versus renormalization: Why are Casimir energy differences so often finite?

open access: yes, 2018
One of the very first applications of the quantum field theoretic vacuum state was in the development of the notion of Casimir energy. Now field theoretic Casimir energies, considered individually, are always infinite. But differences in Casimir energies
Visser, Matt
core   +1 more source

A natural derivative on [0,n] and a binomial Poincar\'e inequality [PDF]

open access: yes, 2011
We consider probability measures supported on a finite discrete interval $[0,n]$. We introduce a new finitedifference operator $\nabla_n$, defined as a linear combination of left and right finite differences. We show that this operator $\nabla_n$ plays a
Hillion, Erwan   +2 more
core   +4 more sources

Generalized finite-difference schemes [PDF]

open access: yesMathematics of Computation, 1969
Finite-difference schemes for initial boundary-value problems for partial differential equations lead to systems of equations which must be solved at each time step. Other methods also lead to systems of equations. We call a method a generalized finite-difference scheme if the matrix of coefficients of the system is sparse.
Swartz, B., Wendroff, B.
openaire   +1 more source

Numerical Analysis of Time-Accurate Solution of Nonlinear Flow Models by Implicit Finite Differences

open access: yesNonlinear Analysis, 2003
Implicit finite differences are often applied to solve flow models. A standard technique to solve these equations is Newton's method. lf time step is too large although the difference equation could be computationally stable, Newton's method may fail ...
S. K. Dey
doaj   +1 more source

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