Results 41 to 50 of about 8,808,665 (333)

Numerical simulation of incompressible and compressible flow. [PDF]

open access: yes, 1989
This thesis describes the development of a numerical solution procedure which is valid for both incompressible flow and compressible flow at any Mach number.
Yang, Zhiyan
core   +6 more sources

An Energy Stable BDF2 Fourier Pseudo-Spectral Numerical Scheme for the Square Phase Field Crystal Equation [PDF]

open access: yesCommunications in Computational Physics, 2019
In this paper we propose and analyze an energy stable numerical scheme for the square phase field crystal (SPFC) equation, a gradient flow modeling crystal dynamics at the atomic scale in space but on diffusive scales in time.
Kelong Cheng, Cheng Wang, S. Wise
semanticscholar   +1 more source

Stable schemes for second-moment turbulent models for incompressible flows

open access: yesComptes Rendus. Mécanique, 2023
A stable scheme is proposed in this paper in order to obtain approximate solutions of second-moment turbulent models for incompressible flows with or without thermal transport equation. The analysis of the convective terms, which includes the solution of
Ferrand, Martin   +3 more
doaj   +1 more source

Numerical Analysis of Stochastic Schemes in Geophysics [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2005
Summary: We present and study the stability, convergence, and order of convergence of a numerical scheme used in geophysics, namely, the stochastic version of a deterministic ''implicit leapfrog'' scheme which has been developed for the approximation of the so-called barotropic vorticity model.
Brian D. Ewald, Roger Temam
openaire   +2 more sources

A Rapid Solver for the Prediction of Flow-Field of High-Speed Vehicle Moving in a Tube

open access: yesEnergies, 2022
High-speed vehicles traveling in a tube with pressures similar to those experienced by aircraft at their maximum altitude are presented. Although the concept resembles Hyperloop, the pressure level investigated here is much higher and safer than that ...
Mohammed Abdulla, Khalid A. Juhany
doaj   +1 more source

Convergence analysis for a stabilized linear semi-implicit numerical scheme for the nonlocal Cahn-Hilliard equation [PDF]

open access: yesMathematics of Computation, 2019
In this paper, we provide a detailed convergence analysis for a first order stabilized linear semi-implicit numerical scheme for the nonlocal Cahn–Hilliard equation, which follows from consistency and stability estimates for the numerical error function.
Xiao Li, Zhonghua Qiao, Cheng Wang
semanticscholar   +1 more source

Symmetry-Preserving Numerical Schemes [PDF]

open access: yes, 2017
In these lectures we review two procedures for constructing finite difference numerical schemes that preserve symmetries of differential equations. The first approach is based on Lie's infinitesimal symmetry generators, while the second method uses the novel theory of equivariant moving frames.
Bihlo, Alexander, Valiquette, Francis
openaire   +2 more sources

Numerical Solution of Parabolic Equations by the Box Scheme [PDF]

open access: yes, 1973
The box scheme proposed by H. B. Keller is a numerical method for solving parabolic partial differential equations. We give a convergence proof of this scheme for the heat equation, for a linear parabolic system, and for a class of nonlinear parabolic ...
Fong, Kirby William
core   +1 more source

Numerical schemes for nonlinear predictor feedback [PDF]

open access: yesMathematics of Control, Signals, and Systems, 2014
Implementation is a common problem with feedback laws with distributed delays. This paper focuses on a specific aspect of the implementation problem for predictor-based feedback laws: the problem of the approximation of the predictor mapping. It is shown that the numerical approximation of the predictor mapping by means of a numerical scheme in ...
Iasson Karafyllis, Miroslav Krstic
openaire   +5 more sources

Mathematical epidemiological modeling and analysis of monkeypox dynamism with non-pharmaceutical intervention using real data from United Kingdom

open access: yesFrontiers in Public Health, 2023
In this study, a mathematical model for studying the dynamics of monkeypox virus transmission with non-pharmaceutical intervention is created, examined, and simulated using real-time data.
Mercy Ngungu   +5 more
doaj   +1 more source

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