Results 11 to 20 of about 6,032 (69)

Generalization of the Fourier problem of temperature waves in half-space

open access: yesФизика волновых процессов и радиотехнические системы, 2021
The problem of asymptotic fluctuations of temperature and moisture content in a half-space whose boundary is blown by an air flow with a temperature varying according to the harmonic law is solved by the method of complex amplitudes. The material filling
Anatoly M. Afanasyev   +1 more
doaj   +1 more source

Stable, Explicit, Leapfrog-Hopscotch Algorithms for the Diffusion Equation

open access: yesComputation, 2021
In this paper, we construct novel numerical algorithms to solve the heat or diffusion equation. We start with 105 different leapfrog-hopscotch algorithm combinations and narrow this selection down to five during subsequent tests.
Ádám Nagy   +5 more
doaj   +1 more source

New integral equation approach to solution of diffusion equation

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The paper concerns the theoretical derivation of a new formulation for solution of the initial-boundary value problems for the diffusion equation. The global and local integral equations are derived by using the fundamental solution for the Laplace ...
Vladimίr Sladek   +2 more
doaj  

ANALISIS KONVERGENSI METODE BEDA HINGGA DALAM MENGHAMPIRI PERSAMAAN DIFUSI

open access: yesE-Jurnal Matematika, 2018
The diffusion equation or known as heat equation is a parabolic and linear type of partial differential equation. One of the numerical method to approximate the solution of diffusion equations is Finite Difference Method (FDM).
F. MUHAMMAD ZAIN   +2 more
doaj   +1 more source

A Necessary Characteristic Equation of Diffusion Processes Having Gaussian Marginals

open access: yesAbstract and Applied Analysis, 2012
The aim of this work is to characterize one-dimensional homogeneous diffusion process, under the assumption that marginal density of the process is Gaussian.
Syeda Rabab Mudakkar
doaj   +1 more source

Similarity Solution for Fractional Diffusion Equation

open access: yesAbstract and Applied Analysis, 2014
Fractional diffusion equation in fractal media is an integropartial differential equation parametrized by fractal Hausdorff dimension and anomalous diffusion exponent.
Jun-Sheng Duan, Ai-Ping Guo, Wen-Zai Yun
doaj   +1 more source

Entropy Production Rate of a One-Dimensional Alpha-Fractional Diffusion Process

open access: yesAxioms, 2016
In this paper, the one-dimensional α-fractional diffusion equation is revisited. This equation is a particular case of the time- and space-fractional diffusion equation with the quotient of the orders of the time- and space-fractional derivatives equal ...
Yuri Luchko
doaj   +1 more source

Analytical Solution and Numerical Simulation of Heat Transfer in Cylindrical- and Spherical-Shaped Bodies

open access: yesComputation, 2023
New analytical solutions of the heat conduction equation obtained by utilizing a self-similar Ansatz are presented in cylindrical and spherical coordinates. Then, these solutions are reproduced with high accuracy using recent explicit and unconditionally
Humam Kareem Jalghaf   +3 more
doaj   +1 more source

Comparing algebraic and numerical solutions of classical diffusion process equations in computational financial mathematics

open access: yesDiscrete Dynamics in Nature and Society, 2001
We revise the interrelations between the classical Black Scholes equation, the diffusion equation and Burgers equation. Some of the algebraic properties the diffusion equation shows are elaborated and qualitatively presented.
Andreas Ruffing   +2 more
doaj   +1 more source

Numerical Simulation of Feller’s Diffusion Equation

open access: yesMathematics, 2019
This article is devoted to Feller’s diffusion equation, which arises naturally in probability and physics (e.g., wave turbulence theory). If discretized naively, this equation may represent serious numerical difficulties since the diffusion ...
Denys Dutykh
doaj   +1 more source

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