Results 61 to 70 of about 234,656 (222)

Scalable explicit implementation of anisotropic diffusion with Runge-Kutta-Legendre super-time-stepping

open access: yes, 2017
An important ingredient in numerical modelling of high temperature magnetised astrophysical plasmas is the anisotropic transport of heat along magnetic field lines from higher to lower temperatures.Magnetohydrodynamics (MHD) typically involves solving ...
Mignone, Andrea   +4 more
core   +1 more source

Numerical approximation of the 3rd order pseudo-parabolic equation using collocation technique

open access: yesBoundary Value Problems
This study presents a novel numerical approach for approximating the solution of third-order pseudo-parabolic partial differential equations (PDEs), which exhibit both parabolic and hyperbolic characteristics.
Neeraj Dhiman   +4 more
doaj   +1 more source

On a Fourth Order Parabolic Equation with Mixed Type Boundary Conditions in a Nonrectangular Domain

open access: yesMoroccan Journal of Pure and Applied Analysis, 2015
This paper is devoted to the study of the following fourth order parabolic equation ∂tu + ∂x4u = f in the non-necessarily rectangular ...
Kheloufi Arezki
doaj   +1 more source

Constructing Exact and Approximate Diffusion Wave Solutions for a Quasilinear Parabolic Equation with Power Nonlinearities

open access: yesMathematics, 2022
The paper studies a degenerate nonlinear parabolic equation containing a convective term and a source (reaction) term. It considers the construction of approximate solutions to this equation with a specified law of diffusion wave motion, the existence of
Alexander Kazakov, Lev Spevak
doaj   +1 more source

Asymptotic expansions of the solutions of the Cauchy problem for nonlinear parabolic equations

open access: yes, 2012
Let $u$ be a solution of the Cauchy problem for the nonlinear parabolic equation $$ \partial_t u=\Delta u+F(x,t,u,\nabla u) \quad in \quad{\bf R}^N\times(0,\infty), \quad u(x,0)=\varphi(x)\quad in \quad{\bf R}^N, $$ and assume that the solution $u ...
A. Carpio   +33 more
core   +1 more source

An Innovative Parabolic Trough Collector Design with a Twin-Cavity Receiver

open access: yesApplied Sciences, 2022
An innovative parabolic trough concentrator coupled to a twin cavity receiver (PTC-TC) in evacuated tube conditions is investigated thermally and optically.
Dimitrios N. Korres   +3 more
doaj   +1 more source

On Asymptotic Global Error Estimation and Control of Finite Difference Solutions for Semilinear Parabolic Equations

open access: yes, 2014
The aim of this paper is to extend the global error estimation and control addressed in Lang and Verwer [SIAM J. Sci. Comput. 29, 2007] for initial value problems to finite difference solutions of semilinear parabolic partial differential equations.
Berzins   +15 more
core   +1 more source

Life span of blow-up solutions for higher-order semilinear parabolic equations

open access: yesElectronic Journal of Differential Equations, 2010
In this article, we study the higher-order semilinear parabolic equation $$displaylines{ u_t+(-Delta)^m u=|u|^p, quad (t,x)in mathbb{R}^1_+imes mathbb{R}^N,cr u(0,x)= u_0(x),quad xin mathbb{R}^N.
Fuqin Sun
doaj  

Parameter-uniform numerical treatment of singularly perturbed parabolic delay differential equations with nonlocal boundary conditions [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
This paper focuses on solving singularly perturbed parabolic equations of the convection-diffusion type with a large negative spatial shift and an integral boundary condition.
W.S. Hailu, G.F. Duressa
doaj   +1 more source

Mathematical Approach for Mechanical Behaviour Analysis of FGM Plates on Elastic Foundation

open access: yesMathematics, 2022
This paper presents the flexural analysis of functionally graded plates resting on elastic foundations using new two-dimensional (2D) and quasi-three-dimensional (quasi-3D) higher order shear deformation theories.
Fatima Zohra Zaoui   +7 more
doaj   +1 more source

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