Results 31 to 40 of about 13,068 (272)

Dissipativity of Runge-Kutta methods for a class of nonlinear functional-integro-differential equations

open access: yesAdvances in Difference Equations, 2017
This paper is concerned with the dissipativity of Runge-Kutta methods for a class of nonlinear functional-integro-differential equations (FIDEs). The dissipativity results of Runge-Kutta methods for the FIDEs are given.
Qing Liao, Liping Wen
doaj   +1 more source

New class of hybrid explicit methods for numerical solution of optimal control problems [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2021
Forward-backward sweep method (FBSM) is an indirect numerical method used for solving optimal control problems, in which the differential equation arising from this method is solved by the Pontryagin’s maximum principle.
M. Ebadi, I. Malih Maleki, A. Ebadian
doaj   +1 more source

The symbolic problems associated with Runge-Kutta methods and their solving in Sage

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2019
Runge-Kutta schemes play a very important role in solving ordinary differential equations numerically. At first we want to present the Sage routine for calculation of Butcher matrix, we call it an rk package.
Yu Ying
doaj   +1 more source

A Novel 2-Stage Fractional Runge–Kutta Method for a Time-Fractional Logistic Growth Model

open access: yesDiscrete Dynamics in Nature and Society, 2020
In this paper, the fractional Euler method has been studied, and the derivation of the novel 2-stage fractional Runge–Kutta (FRK) method has been presented.
M. Arshad, D. Baleanu, M. Riaz, M. Abbas
semanticscholar   +1 more source

A Note on the Construction of Explicit Symplectic Integrators for Schwarzschild Spacetimes

open access: yesThe Astrophysical Journal, 2022
In recent publications, the construction of explicit symplectic integrators for Schwarzschild- and Kerr-type spacetimes is based on splitting and composition methods for numerical integrations of Hamiltonians or time-transformed Hamiltonians associated ...
Naying Zhou   +3 more
doaj   +1 more source

Krylov SSP Integrating Factor Runge–Kutta WENO Methods

open access: yesMathematics, 2021
Weighted essentially non-oscillatory (WENO) methods are especially efficient for numerically solving nonlinear hyperbolic equations. In order to achieve strong stability and large time-steps, strong stability preserving (SSP) integrating factor (IF ...
Shanqin Chen
doaj   +1 more source

Parallelization of Runge–Kutta Methods for Hardware Implementation

open access: yesComputation, 2022
Parallel numerical integration is a valuable tool used in many applications requiring high-performance numerical solvers, which is of great interest nowadays due to the increasing difficulty and complexity in differential problems.
Petr Fedoseev   +4 more
doaj   +1 more source

Strong Stability of Explicit Runge-Kutta Time Discretizations [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2018
Motivated by studies on fully discrete numerical schemes for linear hyperbolic conservation laws, we present a framework on analyzing the strong stability of explicit Runge--Kutta (RK) time discret...
Zheng Sun, Chi-Wang Shu
semanticscholar   +1 more source

A-stability preserving perturbation of Runge-Kutta methods for stochastic differential equations

open access: yesApplied Mathematics Letters, 2020
The paper is focused on analyzing the linear stability properties of stochastic Runge–Kutta (SRK) methods interpreted as a stochastic perturbation of the corresponding deterministic Runge–Kutta methods.
V. Citro   +2 more
semanticscholar   +1 more source

Chaos of flexible rotor system with critical speed in magnetic bearing based on the improved precise Runge–Kutta hybrid integration

open access: yesAdvances in Mechanical Engineering, 2018
Magnetic rotor-bearing system has drawn great attention because of its several advantages compared to existent rotor-bearing system, and explicit Runge–Kutta method has achieved good results in solving dynamic equation.
Xi Fang   +6 more
doaj   +1 more source

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