Results 21 to 30 of about 116,557 (189)
Asymmetric diffusion of cosmic rays [PDF]
, 2015 Cosmic ray propagation is diffusive because of pitch angle scattering by waves. We demonstrate that if the high-amplitude magnetohydrodynamic turbulence with $\tilde B/\langle B\rangle \sim 1$ is present on top of the mean field gradient, the diffusion ...
Medvedev, Mikhail V. +1 more
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Journal of Mathematics, 2022 A singularly perturbed delay parabolic problem of convection-diffusion type with a discontinuous convection coefficient and source term is examined. In the problem, strong interior layers and weak boundary layers are exhibited due to a large delay in the
Mulunesh Amsalu Ayele +2 more
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Alexandria Engineering Journal, 2023 In this research, we adopt a fully implicit approach with a weighted shifted Grunwald–Letnikov difference operator to find the numerical solution of the one and two-dimensional nonlinear space fractional convection–diffusion-reaction equation over a ...
Eyaya Fekadie Anley +3 more
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The difference scheme for the two-dimensional convection-diffusion problem for large peclet numbers
MATEC Web of Conferences, 2018 The purpose of this work is the development of a difference scheme for the solution of convection-diffusion problem at high Peclet numbers (Pe>2). In accordance with this purpose the following problems were solved: difference scheme for convection is ...
Sukhinov Alexander I. +2 more
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Frontiers in Applied Mathematics and Statistics, 2023 This paper presents a parameter-uniform numerical method to solve the time dependent singularly perturbed delay parabolic convection-diffusion problems.
Zerihun Ibrahim Hassen +1 more
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Biomath, 2017 In this work, we present a numerical scheme for the approximate solutions of the one-dimensional parabolic convection-diffusion model problems. Diffusion models form a reasonable basis for studying insect and animal dispersal and invasion, which arise ...
Burcu Gürbüz, Mehmet Sezer
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Drug delivery in catheterized arterial blood flow with atherosclerosis
Results in Applied Mathematics, 2020 We study the problem of drug delivery in a catheterized artery in the presence of atherosclerosis. The problem is modeled in the context of a two-phase flow system which consists of red blood cells and blood plasma. The coupled differential equations for
Saulo Orizaga +2 more
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A monotone finite-difference high order accuracy scheme for the 2D convection – diffusion equations
Журнал Белорусского государственного университета: Математика, информатика, 2019 A stable finite-difference scheme is constructed on a minimum stencil of a uniform mesh for a two-dimensional steady-state convection – diffusion equation of a general form; the scheme is theoretically studied and tested.
Viktor K. Polevikov
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Results in Applied Mathematics, 2022 In this work, a numerical method for the singularly perturbed parabolic convection–diffusion turning point problem with Robin boundary condition was developed.
Fasika Wondimu Gelu +1 more
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Nonexistence of solutions results for certain fractional differential equations
Mathematical Modelling and Analysis, 2011 This paper is meant to establish sufficient conditions for the nonexistence of weak solutions to nonlinear fractional diffusion equation in space and time with nonlinear convective term. The Fujita exponent is determined.
Mohamed Berbiche
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