Results 21 to 30 of about 5,776 (296)

Unconditionally Stable and Convergent Difference Scheme for Superdiffusion with Extrapolation

open access: yesJournal of Scientific Computing, 2023
AbstractApproximating the Hadamard finite-part integral by the quadratic interpolation polynomials, we obtain a scheme for approximating the Riemann-Liouville fractional derivative of order $$\alpha \in (1, 2)$$ α ∈ ( 1 ,
Jinping Yang   +3 more
openaire   +3 more sources

Unconditionally stable second-order accurate scheme for a parabolic sine-Gordon equation

open access: yesAIP Advances, 2022
In this study, we propose an unconditionally stable temporally second-order accurate scheme for a parabolic sine-Gordon equation. The proposed scheme is based on an operator splitting method.
Seokjun Ham   +3 more
doaj   +1 more source

Unconditionally Stable Methods for Hamilton–Jacobi Equations [PDF]

open access: yesJournal of Computational Physics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Karlsen, Kenneth Hvistendahl   +1 more
openaire   +1 more source

A Linear, Second-Order, and Unconditionally Energy-Stable Method for the L2-Gradient Flow-Based Phase-Field Crystal Equation

open access: yesMathematics, 2022
To solve the L2-gradient flow-based phase-field crystal equation accurately and efficiently, we present a linear, second-order, and unconditionally energy-stable method. We first truncate the quartic function in the Swift–Hohenberg energy functional.
Hyun Geun Lee
doaj   +1 more source

New Method for Solving the Inverse Thermal Conduction Problem (θ-Scheme Combined with CG Method under Strong Wolfe Line Search)

open access: yesBuildings, 2023
Most thermal researchers have solved thermal conduction problems (inverse or direct) using several different methods. These include the usual discretization methods, conventional and special estimation methods, in addition to simple synchronous gradient ...
Rachid Djeffal   +4 more
doaj   +1 more source

Unconditionally stable perfectly matched layer boundary conditions [PDF]

open access: yes, 2007
A brief review is given of a systematic, product-formula based approach to construct unconditionally stable algorithms for solving the time-dependent Maxwell equations.
Michielsen, K.   +3 more
core   +1 more source

The optimal explicit unconditionally stable box scheme [PDF]

open access: yes, 1997
.The finite difference “box” scheme, (see also [1],[2]), is considered on the simplest possible model of single first order linear hyperbolic equation: ut+mux=0 with constant, coefficient m, and one space variable.
Krzysztof Moszyński   +1 more
core   +1 more source

2D Efficient Unconditionally Stable Meshless FDTD Algorithm

open access: yesInternational Journal of Antennas and Propagation, 2016
This paper presents an efficient weighted Laguerre polynomials based meshless finite-difference time domain (WLP-MFDTD). By decomposing the coefficients of the system matrix and adding a perturbation term, a factorization-splitting scheme is introduced ...
Kang Luo   +4 more
doaj   +1 more source

Positive explicit and implicit computational techniques for reaction–diffusion epidemic model of dengue disease dynamics

open access: yesAdvances in Difference Equations, 2020
The aim of this work is to develop a novel explicit unconditionally positivity preserving finite difference (FD) scheme and an implicit positive FD scheme for the numerical solution of dengue epidemic reaction–diffusion model with incubation period of ...
Nauman Ahmed   +4 more
doaj   +1 more source

Unconditionally stable methods for second order differential equations [PDF]

open access: yes, 1979
We use the concept of order stars (see [1]) to prove and generalize a recent result of Dahlquist [2] on unconditionally stable linear multistep methods for second order differential equations.
Hairer, Ernst
core   +1 more source

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