Results 21 to 30 of about 5,795,372 (310)

Crosswise Stream of Cu-H2O Nanofluid with Micro Rotation Effects: Heat Transfer Analysis

open access: yesNanomaterials, 2023
The present study focuses on a crosswise stream of liquid-holding nano-sized particles over an elongating (stretching) surface. Tiny particles of copper are added into base liquid (water). The influence of the micro rotation phenomenon is also considered.
Rashid Mehmood   +3 more
doaj   +1 more source

A New Class of Generalized Fractal and Fractal-Fractional Derivatives with Non-Singular Kernels

open access: yesFractal and Fractional, 2023
The present paper introduces a new class of generalized differential and integral operators. This class includes and generalizes a large number of definitions of fractal-fractional derivatives and integral operators used to model the complex dynamics of ...
Khalid Hattaf
doaj   +1 more source

A positivity-preserving, energy stable and convergent numerical scheme for the Poisson-Nernst-Planck system [PDF]

open access: yesMathematics of Computation, 2020
In this paper we propose and analyze a finite difference numerical scheme for the Poisson-Nernst-Planck equation (PNP) system. To understand the energy structure of the PNP model, we make use of the Energetic Variational Approach (EnVarA), so that the ...
Chun Liu   +4 more
semanticscholar   +1 more source

On the numerical overshoots of shock‐capturing schemes [PDF]

open access: yesInternational Journal for Numerical Methods in Fluids, 2021
AbstractThis note introduces a simple metric for benchmarking shock‐capturing schemes. This metric is especially focused on the shock‐capturing overshoots, which may undermine the robustness of numerical simulations, as well as the reliability of numerical results.
Huaibao Zhang, Fan Zhang
openaire   +2 more sources

NUMERICAL ANALYSIS OF THE CAUCHY PROBLEM FOR A WIDE CLASS FRACTAL OSCILLATORS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2018
The Cauchy problem for a wide class of fractal oscillators is considered in the paper and its numerical investigation is carried out using the theory of finite-difference schemes.
R. I. Parovik
doaj   +1 more source

In Vivo HIV Dynamics, Modeling the Interaction of HIV and Immune System via Non-Integer Derivatives

open access: yesFractal and Fractional, 2023
The economic burden of HIV extends beyond the individual level and affects communities and countries. HIV can lead to decreased economic growth due to lost productivity and increased healthcare costs.
Asif Jan   +5 more
doaj   +1 more source

An improved error analysis for a second-order numerical scheme for the Cahn-Hilliard equation

open access: yesJournal of Computational and Applied Mathematics, 2021
In this paper we present an error analysis for a second order accurate numerical scheme for the 2-D and 3-D Cahn-Hilliard (CH) equation, with an improved convergence constant.
Jing Guo   +3 more
semanticscholar   +1 more source

Existence of solutions for hybrid modified ABC-fractional differential equations with p-Laplacian operator and an application to a waterborne disease model

open access: yesAlexandria Engineering Journal, 2023
In this article, we investigate some necessary and sufficient conditions required for the existence of solutions for modified ABC-fractional differential equations (mAB-FDEs) with p-Laplacian operator.
Hasib Khan   +2 more
doaj   +1 more source

A Positive and Energy Stable Numerical Scheme for the Poisson-Nernst-Planck-Cahn-Hilliard Equations with Steric Interactions [PDF]

open access: yesJournal of Computational Physics, 2020
We consider numerical methods for the Poisson-Nernst-Planck-Cahn-Hilliard (PNPCH) equations with steric interactions. We propose a novel energy stable numerical scheme that respects mass conservation and positivity at the discrete level.
Y. Qian, Cheng Wang, Shenggao Zhou
semanticscholar   +1 more source

A New Fourth-Order Predictor–Corrector Numerical Scheme for Heat Transfer by Darcy–Forchheimer Flow of Micropolar Fluid with Homogeneous–Heterogeneous Reactions

open access: yesApplied Sciences, 2022
This paper proposes a numerical scheme for solving linear and nonlinear differential equations obtained from the mathematical modeling of a flow phenomenon. The scheme is constructed on two grid points.
Yasir Nawaz   +2 more
doaj   +1 more source

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