diffusion equation

In this paper, the unstable interior diffusion equation with precise solution of flaky pellet and the macroscopic reaction rate equation are given.

文章给出了薄片颗粒的不稳定内扩散方程及其精确解，并导出了宏观反应速率方程。

Based on the skew direction difference operator, the implicit skew difference schemes were constructed, and the boundary condition was unified, to solve the diffusion equation.

采用斜向差分算子，建立斜向隐式差分格式，再结合边界条件，对扩散方程进行求解。

Those errors of the spatial finite-difference make the solution of advective equation to be a modulated and translated wave, and the solution of diffusion equation to carry with the false advective error.

这种空间差分的误差使平流方程的解成为一调幅移行波，而使扩散方程的解带有平流误差。

A Finite Difference Scheme for Secondary Reaction-diffusion Equation Group

二级食物链反应扩散方程组的有限差分法

A High Accuracy Compact Difference Scheme for Convection Diffusion Reaction Equation on Non-uniform Grid

定常对流扩散反应方程非均匀网格上高精度紧致差分格式

Fingerprint Image Sharpening and Denoising Method Based on Nonlinear Anisotropic Reverse Diffusion Equation

基于各向异性逆扩散方程的指纹图像锐化去噪方法

This paper deals with the shock wave solutions of a nonlinear reaction-diffusion equation.

本文研究一类非线性反应扩散方程的冲击波解。

The other type of initial value problem of interest for us is the diffusion equation.

另一类我们感兴趣的初值问题是扩散方程.

In this paper, we develop a non local method with temporal and spatial correlations to introduce a fractional order advection diffusion equation based on the usually used local 2_nd order advection dispersion equation.

考虑了扩散过程的时间相关和时空相关性，用非局域性的处理方法，在传统的二阶对流扩散方程基础上，得到了分数阶对流扩散方程，以此方程来描述反常扩散。

This paper deals with the periodic optimal control governed by a degenerate nonlinear diffusion equation.

研究由退化非线性扩散方程所支配系统的周期最优控制问题。

The thickness of the diffusion layer reckoned by computation of steady-state diffusion equation has been found in agreement with the results obtained through laboratory experiment.

本文从稳态扩散方程推导出产生浓差极化的扩散层厚度与实验数据相符。

Perturbational finite volume method for convective diffusion equation and discussion

对流扩散方程的摄动有限体积（PFV）方法及讨论

Some Properties of the Solutions for Reaction-Diffusion Equation on Plane Domain

平面域上反应扩散方程解的一些性质

The Eulerian-Lagrangian method is employed to discretize the convection terms in the momentum equations of tidal motion, as well as the salt diffusion equation.

采用欧拉&拉格朗日法离散潮流运动方程中的对流项和盐度扩散方程，以提高计算稳定性和数值模拟精度。

The steady-state and time-domain analytical solutions of the diffusion equation for near-IR radiation through a four-layered highly scattering matched medium have been obtained. The matched boundary condition and the extrapolated one have been considered.

根据匹配边界条件和外推边界条件，得到了近红外线通过四层高散射匹配介质的稳态和时域漫射方程的解。

The transposition and attenuation actions of flood wave are defined by of convection and diffusion equation.

根据对流扩散方程,从数学上定义了洪水波的推移和坦化作用.

The concentration field of suspended sediment is calculated by using diffusion equation.

用剖面二维悬移质扩散方程求解浓度场.

Generalized Difference Methods for One-dimensional Unsteady Convective Diffusion Equation

非定常一维对流扩散方程的广义差分法

The nucleation of ordered phase is simulated by microscopic diffusion equation and the assumption of classical nucleation theory is examined.

利用微扩散方程对有序相成核过程进行计算机模拟，对经典理论的假设进行验证。

Nonlinear Diffusion Equation for Image Denoising Based on SAR Amplitude and Gradient Information

基于幅度与梯度综合信息的SAR图像非线性扩散去噪方法

Key Technique of Real-Time Simulation in Diffusion Process of Hazardous Gases ── Probe into Solving Reversal Question in Gas Diffusion Equation

危险气体扩散实时仿真的关键技术&反求源强方法初探

An Analytical Transformation of 1-D Convective Diffusion Equation and Its Finite Element Solution

一维对流扩散方程的迎风变换及其有限元解

Monotone Iterative Method of Reaction-Diffusion Equation with Volterra Type Nonlinear Boundary Condition

具有Volterra型非线性边界条件的反应扩散方程的单调迭代法

Analytical solution of fractional reaction diffusion equation in finite fractal media

有限分形介质中分数阶反应扩散方程及其解析解

Test and Diffusion Equation Calculation for Sand Separation in Setting Tank of Water Retention-well Development Prospect of Micro Irrigation with Well Storing Rainfall in Drought Mountain Area

旱井沉沙池中泥沙运动方程解析与试验旱井集雨微灌在干旱山区的发展前景

In this paper, A modified Dennis scheme for the steady-state convection-diffusion equation is proposed.

本文提出了求解定态对流扩散方程的修正Dennis格式.

A transformation of the convective diffusion equation with corresponding finite difference method

对流扩散方程的迎风变换及相应有限差分方法

Integrating the 2-D diffusion equation, the coefficient of saturation recovery is derived and its characteristics can be revealed clearly. Then the theoretical expression of coefficient of saturation recovery under the strong equilibrium condition and the corresponding calculating value have been obtained.

在此基础上积分二维扩散方程，得到了恢复饱和系数，阐述了它的特性，进而导出了在强平衡条件下的恢复饱和系数的理论表达式和相应的数字结果。

The hydrodynamic equations are solved and, simultaneously, the two dimensional advection diffusion equation is solved by using Alternating Direction Implicit method. The numerical solutions have been tested by comparing observed and computed values of water level, and tidal velocity.

根据课题组的二维潮流污染扩散数学模型，选取合适的参数，采用ADI法（Alternating Direction Implicit Method）求解潮流污染扩散方程，并对数值模拟结果进行了水位以及流速的验证。

The effect of several variables on the drying rate of carrot has been investigated. The standard solution of the non-stationary-state diffusion equation was used to analysis the experimental results during the initial phase of the falling rate period of drying.

讨论了几个变量对胡萝卜干燥速率的影响，并用不稳定状态扩散方程的标准解分析了降速干燥初始阶段的实验结果。