Results 1 to 10 of about 25,326 (156)

A Compact Unconditionally Stable Method for Time-Domain Maxwell's Equations [PDF]

open access: yesInternational Journal of Antennas and Propagation, 2013
Higher order unconditionally stable methods are effective ways for simulating field behaviors of electromagnetic problems since they are free of Courant-Friedrich-Levy conditions. The development of accurate schemes with less computational expenditure is
Zhuo Su, Yongqin Yang, Yunliang Long
doaj   +2 more sources

Novel, linear, decoupled and unconditionally energy stable numerical methods for the coupled Cahn–Hilliard equations

open access: yesJournal of Inequalities and Applications, 2022
This paper uses a novel numerical approach to approximate the coupled Cahn–Hilliard equations, which are a highly nonlinear system depicting the phase separation of the homopolymer and copolymer mixtures.
Lingfei Li   +3 more
doaj   +3 more sources

Analyzing the dynamic patterns of COVID-19 through nonstandard finite difference scheme [PDF]

open access: yesScientific Reports
This paper presents a novel approach to analyzing the dynamics of COVID-19 using nonstandard finite difference (NSFD) schemes. Our model incorporates both asymptomatic and symptomatic infected individuals, allowing for a more comprehensive understanding ...
Abeer Aljohani   +2 more
doaj   +2 more sources

A Comparative Study of Explicit and Stable Time Integration Schemes for Heat Conduction in an Insulated Wall

open access: yesBuildings, 2022
Calculating heat transfer in building components is an important and nontrivial task. Thus, in this work, we extensively examined 13 numerical methods to solve the linear heat conduction equation in building walls.
Humam Kareem Jalghaf   +2 more
doaj   +1 more source

Numerical Stability of Brusselator System [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2011
The numerical stability analysis of Brusselator system has been done in one and two dimensional space. For one dimension we studied the numerical stability for explicit and implicit (Crank- Nicolson) methods and we found that explicit method for solving ...
Saad Manaa, Rostam Saeed, Fadhil Easif
doaj   +1 more source

An Unconditionally Stable Difference Scheme for the Two-Dimensional Modified Fisher–Kolmogorov–Petrovsky–Piscounov Equation

open access: yesJournal of Mathematics, 2023
In this article, we develop an unconditionally stable numerical scheme for the modified Fisher–Kolmogorov–Petrovsky–Piscounov (Fisher–KPP) equation modeling population dynamics in two-dimensional space.
Soobin Kwak   +5 more
doaj   +1 more source

Testing Some Different Implementations of Heat Convection and Radiation in the Leapfrog-Hopscotch Algorithm

open access: yesAlgorithms, 2022
Based on many previous experiments, the most efficient explicit and stable numerical method to solve heat conduction problems is the leapfrog-hopscotch scheme.
Ali Habeeb Askar   +3 more
doaj   +1 more source

New Analytical Results and Comparison of 14 Numerical Schemes for the Diffusion Equation with Space-Dependent Diffusion Coefficient

open access: yesMathematics, 2022
We examine the one-dimensional transient diffusion equation with a space-dependent diffusion coefficient. Such equations can be derived from the Fokker–Planck equation and are essential for understanding the diffusion mechanisms, e.g., in carbon ...
Mahmoud Saleh   +3 more
doaj   +1 more source

HIGH-ORDER UNCONDITIONALLY-STABLE FOUR-STEP ADI-FDTD METHODS AND NUMERICAL ANALYSIS [PDF]

open access: yesProgress In Electromagnetics Research, 2013
High-order unconditionally-stable three-dimensional (3-D) four-step alternating direction implicit flnite-difierence time-domain (ADI-FDTD) methods are presented. Based on the exponential evolution operator (EEO), the Maxwell's equations in a matrix form can be split into four sub-procedures.
Yong-Dan Kong, Qing-Xin Chu, Rong-Lin Li
  +6 more sources

Consistency and Convergence Properties of 20 Recent and Old Numerical Schemes for the Diffusion Equation

open access: yesAlgorithms, 2022
We collected 20 explicit and stable numerical algorithms for the one-dimensional transient diffusion equation and analytically examined their consistency and convergence properties.
Ádám Nagy   +2 more
doaj   +1 more source

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