Results 21 to 30 of about 135,802 (265)
Symmetry-Preserving Numerical Schemes [PDF]
, 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
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Numerical schemes for nonlinear predictor feedback [PDF]
Mathematics 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
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Frontiers 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
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Известия высших учебных заведений: Нефть и газ, 2018 The article presents the mathematical modeling of heated gas dissociation process into the reservoir saturated with methane and its hydrate. We studied how different factors has affected the dissociation process.
N. G. Musakaev +2 more
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On the accuracy of invariant numerical schemes
Communications on Pure and Applied Analysis, 2011 In this paper we present a method of construction of invariant numerical schemes for partial differential equations. The resulting schemes preserve the Lie-symmetry group of the continuous equation and they are at least as accurate as the original scheme.
Chhay, Marx, Hamdouni, Aziz
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Trigonometrically Fitted Improved Hybrid Method for Oscillatory Problems
Computer Sciences & Mathematics Forum, 2023 Presented in this paper is a trigonometrically fitted scheme based on a class of improved hybrid method for the numerical integration of oscillatory problems.
Yusuf Dauda Jikantoro +2 more
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Open Physics, 2022 The investigation of thermal transport in the nanofluid over a curved Riga surface is significant and extensively used in many industries as well as in engineering.
Adnan +6 more
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NUMERICAL OPTIMIZATION OF A MULTIPHYSICS CALCULATION SCHEME [PDF]
EPJ Web of Conferences, 2021 This work concerns the numerical optimization of a multiphysics calculation scheme. The considered application is a 5x5 Pressurized Water Reactor (PWR) assemblies mini-core surrounded by radial and axial reflectors. The scenario adopted for the analysis is steady-state nominal conditions and fission products set to the equilibrium concentration.
Cattaneo, Paolo +4 more
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gL1 Scheme for Solving a Class of Generalized Time-Fractional Diffusion Equations
Mathematics, 2022 In this paper, a numerical scheme based on a general temporal mesh is constructed for a generalized time-fractional diffusion problem of order α. The main idea involves the generalized linear interpolation and so we term the numerical scheme the gL1 ...
Xuhao Li, Patricia J. Y. Wong
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Mathematics, 2022 The main metabolism of yeasts produces bioethanol. Bioethanol, which is produced from biomass and bioenergy crops, has been promoted as one of the most viable alternatives to fossil fuels.
Rubayyi T. Alqahtani +2 more
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