نتایج جستجو برای: numerical diffusion
تعداد نتایج: 483477 فیلتر نتایج به سال:
Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 23 October 2019Accepted: 08 January 2021Published online: 15 April 2021Keywordsparameter identification, subdiffusion, fully discrete scheme, convergence, error estimate, Tikhonov regularizationAMS Subject Headings35R11, 35R30, 49M25, 65M60Publication DataISSN (print): 03...
We extend recent work on the analysis of synchronization in a pair of biochemical oscillators coupled by linear bulk diffusion, in order to explore the effects of discrete delays. More specifically, we consider two well-mixed, identical compartments located at either end of a bounded, one-dimensional domain. The compartments can exchange signaling molecules with the bulk domain, within which th...
A simple Taylor-series analysis is made of the finite-difference formulations of the convection terms of convection-diffusion equations. A limitation is derived on grid Peclet number and grid size for a formulation to produce the expected numerical results. To verify the theory, the systematic numerical computations were carried out of a simple one-dimensional convection-diffusion equation. The...
Direct numerical simulations of the transition process from periodic to chaotic dynamics are presented for two variable Oregonator-diffusion model coupled with convection. Numerical solutions to the corresponding reaction-diffusion-convection system of equations show that natural convection can change in a qualitative way, the evolution of concentration distribution, as compared with convection...
The diffusion coefficients at control volume surfaces are required in the most-widely used finite-volume method for numerical simulation of convection-diffusion equations. Various interpolation methods for diffusion coefficients at control volume surfaces are briefly discussed and extensively compared with the analytical solutions of both pure diffusion and convection-diffusion problems in this...
We present a numerical algorithm for the incorporation of the active cosmic ray transport, into the ZEUS-3D magnetohydrodynamical code. The cosmic ray transport is described by the diffusion-advection equation. The applied form of the diffusion tensor allows for anisotropic diffusion of cosmic rays along and across the magnetic field direction, which is controlled by two parameters: the paralle...
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