Tailored Finite Point Method for Steady - State Reaction - Diffusion Equations

نویسندگان

  • HOUDE HAN
  • ZHONGYI HUANG
چکیده

Abstract. In this paper, we propose to use the tailored-finite-point method (TFPM) for a type of steady-state reaction-diffusion problems in two dimensions. Three tailored finite point schemes are constructed for the given problem. Our finite point method has been tailored to some particular properties of the problem. Therefore, our TFPM satisfies the discrete maximum principle automatically. We also study the error estimates of our TFPM. We prove that our TFPM can achieve good accuracy even when the mesh size h≫ ε. Our numerical examples show the efficiency and reliability of our method.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Adaptive Finite Volume Element Method for Convection-diffusion-reaction Problems in 3-d∗

We present an adaptive numerical technique for solving steady-state diffusion and convection-diffusion-reaction equations in 3-D using finite volume approximations. Computational results of various model simulations of fluid flow and transport of passive chemicals in non-homogeneous aquifers are presented and discussed.

متن کامل

A Tailored Finite Point Method for Solving Steady MHDDuct Flow Problems with Boundary Layers

In this paper we propose a development of the finite difference method, called the tailored finite point method, for solving steady magnetohydrodynamic (MHD) duct flow problemswith a high Hartmann number. When the Hartmann number is large, the MHD duct flow is convection-dominated and thus its solution may exhibit localized phenomena such as the boundary layer. Most conventional numerical metho...

متن کامل

Positivity-preserving nonstandard finite difference Schemes for simulation of advection-diffusion reaction equations

Systems in which reaction terms are coupled to diffusion and advection transports arise in a wide range of chemical engineering applications, physics, biology and environmental. In these cases, the components of the unknown can denote concentrations or population sizes which represent quantities and they need to remain positive. Classical finite difference schemes may produce numerical drawback...

متن کامل

Two Uniform Tailored Finite Point Schemes for the Two Dimensional Discrete Ordinates Trans- port Equations with Boundary and Interface Layers

This paper presents two uniformly convergent numerical schemes for the two dimensional steady state discrete ordinates transport equation in the diffusive regime, which is valid up to the boundary and interface layers. A five-point nodecentered and a four-point cell-centered tailored finite point schemes (TFPS) are introduced. The schemes firstly approximate the scattering coefficients and sour...

متن کامل

The effect of vertical injection of reactants to the membrane electrode assembly on the performance of a PEM fuel cell

In order to present a new and high performance structure of PEM fuel cell and study the influence of the flow direction and distribution on the rate of reactants diffusion, three novel models of vertical reactant flow injection into the anode and cathode reaction area field have been introduced. They consist of one inlet and two inlets and also a continuous channel. The governing equations on t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010