Results 21 to 30 of about 1,759,067 (289)

Non-standard and Numerov finite difference schemes for finite difference time domain method to solve one-dimensional Schrödinger equation

open access: yesJournal of Physics: Theories and Applications, 2018
The purpose of  this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schrödinger equation.
Lily Maysari Angraini, I Wayan Sudiarta
doaj   +1 more source

A Method for Modeling Acoustic Waves in Moving Subdomains

open access: yesAcoustics, 2022
Forward modeling plays a key role in both the creation of predictive models and the study of the surrounding environment through inversion methods. Due to their competitive computational cost and modest algorithmic complexity, finite difference methods ...
Milan Brankovic, Mark E. Everett
doaj   +1 more source

Finite difference calculations of permeability in large domains in a wide porosity range. [PDF]

open access: yes, 2016
Determining effective hydraulic, thermal, mechanical and electrical properties of porous materials by means of classical physical experiments is often time-consuming and expensive.
A Yang   +26 more
core   +1 more source

Finite logarithmic order meromorphic solutions of linear difference/differential-difference equations [PDF]

open access: yesMathematica Bohemica
Firstly we study the growth of meromorphic solutions of linear difference equation of the form A_k(z)f(z+c_k)+\cdots+A_1(z)f(z+c_1)+A_0(z)f(z)=F(z), where $A_k(z),\ldots,A_0(z)$ and $F(z)$ are meromorphic functions of finite logarithmic order, $c_i$
Abdelkader Dahmani, Benharrat Belaïdi
doaj   +1 more source

Modifying Explicit Finite Difference Method by Using Radial Basis Function Neural Network [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
In this research, we use artificial neural networks, specifically radial basis function neural network (RBFNN) to improve the performance and work of the explicit finite differences method (EFDM), where it was compared, the modified method with an ...
Omar Kasim
doaj   +1 more source

Real space finite difference method for conductance calculations [PDF]

open access: yes, 2004
We present a general method for calculating coherent electronic transport in quantum wires and tunnel junctions. It is based upon a real space high order finite difference representation of the single particle Hamiltonian and wave functions.
A. Levy Yeyati   +11 more
core   +4 more sources

Catalytic flow with a coupled Finite Difference -- Lattice Boltzmann scheme [PDF]

open access: yes, 2020
Many catalyst devices employ flow through porous structures, which leads to a complex macroscopic mass and heat transport. To unravel the detailed dynamics of the reactive gas flow, we present an all-encompassing model, consisting of thermal lattice ...
Berger, Daniel   +3 more
core   +3 more sources

Chaotic finite difference operators

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2023
In this article, we analyze the chaotic behavior of finite difference operators associated with certain differential equations. Our examples range from numerical schemes for a birth-and-death model with proliferation to a class of second-order partial differential equations that includes the hyperbolic heat transfer equation, the telegraph equation ...
Marina Murillo-Arcila   +2 more
openaire   +5 more sources

Modeling and Simulation of Flue Gas Desulfurization Using Slurry of Fine Activated Carbon Particles [PDF]

open access: yesEngineering and Technology Journal, 2010
The main objective of the present work is to investigate thefeasibility of using a slurry of fine activated carbon particles ...
Asmaa I. Eliass, Neran K. Ibrahim
doaj   +1 more source

An Investigation of Natural Convection Heat Transfer in a Square Enclosure Filled with Nanofluid [PDF]

open access: yesEngineering and Technology Journal, 2011
In this research, numerical solution of natural convection heat transfer of nanofluids in two-dimensional square enclosures is obtained for different values of Rayleigh numbers and volume fraction of nanofluids.
Ayad M. Salman
doaj   +1 more source

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