نتایج جستجو برای: numerical diffusion

تعداد نتایج: 483477  

Journal: :Monthly Notices of the Royal Astronomical Society 2007

Journal: :Journal of Computational and Applied Mathematics 2015

Journal: :Siam Journal on Control and Optimization 2021

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...

2016
Bin Xu Paul C. Bressloff

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...

2004
Liu Zhongliang Ma Chongfang

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...

Journal: :The Journal of chemical physics 2008
Marcello Antonio Budroni Marco Masia Mauro Rustici Nadia Marchettini Vitaly Volpert Pier Carlo Cresto

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...

2003
LIU Zhongliang MA Chongfang

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...

2003
H. Lesch

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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