本文的计算方法还可以应用于任意二维扩散器的内部流动计算，用来指导改进扩散器的设计。
This model also can be used for the internal flow calculation of any two-dimensional diffuser and for improving its design.
根据表面扩散控制下物质迁移规律，建立有限单元法，对裂面形貌扰动下二维微裂纹演变过程进行数值模拟。
Based on the theory of surface diffusion, a finite element method was developed to simulate shape evolutions of two-dimensional microcracks with surface perturbation.
建立的粉尘在巷道中的传递方程是一个二维平流扩散输运方程。
The transfer equation for dust given in this paper is a equation of two dimensional airflow diffusion transport.
本文采用二维水质数学模型，研究南洞庭湖污染物质迁移扩散与混合的运动规律。
Mixing and dispersion of pollutants in South Dongting Lake was studied with a two-dimensional mathematical model for water quality.
将二维点扩散函数(PSF)和蒙特卡罗方法相结合，引入了一种研究混浊介质显微成像的快速仿真模型。
A rapid and accurate model used to study microscopic imaging through turbid medium is presented which combines traditional Monte Carlo with two dimensional point spread function (PSF).
对另一类反应扩散系统，在固定边界条件下，在二维空间所形成的有序结构进行了研究。
The ordered structures forming in two-dimensional space for another class of the reaction-diffusion systems are studied under the fixed boundary condition.
提出了水泥石氯离子扩散系数预测的二维数值方法。
A two-dimensional numerical method is presented for predicting the chloride diffusion coefficient of cement paste.
构造了求解二维两群中子扩散方程的混合间断有限元格式，研制了相应的计算程序。
A variational formula combining mixed finite element method with discontinuous finite element method is derived for solving the two-group neutron diffusion equation in 2d.
第四章里，对二维非线性对流扩散方程，构造了特征有限元的两重网格算法，并给出了相应的收敛性分析，数值例子。
In chapter 4, for 2d nonlinear convection-dominated diffusion equation, a two-grid scheme of characteristic finite-element solution is constructed.
本文研究二维常系数反应扩散方程的紧交替方向隐式差分格式。
Secondly, a compact ADI difference scheme is presented by introducing a variable of intermediate value.
通过将中心波达方向与角度扩散进行分离，把二维联合搜索简化为一维搜索，降低了计算复杂度。
By isolating the central DOA and angular spread into decoupled parts, 2-d joint searching can be simplified to sequential 1-d searching, which reduces computational complexity.
本文用二维水流方程和平面热扩散方程模拟电厂温排水在浦阳江中的扩散情况。
In this paper, a two-dimensional flow equation and a thermodiffusion equation are used to simulate the diffusion feature of the cooling water drained into Puyang River by Xiaoshan Power Plant.
采用平面二维数学模型计算了温排水扩散深度为全水深和掺混层两种情况。
The diffusion effects of two types of diffusion depth of cooling water, such as the whole water depth and the mixing zone, are calculated by using a two-dimensional mathematical model.
在二维情况下，忽略热扩散效应，利用汉克尔积分变换法和最陡下降法，求解热扩散方程和波动方程，得出了位移的解析表达式。
The thermal equation and wave equation are solved by the methods of Hankel transform and steepest descent, and the general expression of displacement is obtained.
二维网格线作为轨迹在空气中扩散和膨胀，形成了用最小的轻质材料创造的庞大空间。
A 2d network of lines as a footprint inflates and expands in the air, resulting in a voluminous space created with minimal lightweight material.
其次我们得到一类带有非线性扩散项的MBSC B方程组在二维有界区域上弱解的存在唯一性。
Then the existence and uniqueness of weak solutions for a BSCB System with nonlinear diffusion term are established on 2-d bounded domains.
以有限体积法为核心，建立了求解二维浅水方程和对流扩散方程的模型体系。
Based on the Finite Volume Methods (FVM), model system is developed to solve the 2d shallow water equation and convection-diffusion equation.
采用箱式模型、二维ADI流体方程和对流扩散模型计算浔江湾海水交换时间，分析浔江湾的水动力特点和湾内海水交换时空分布的特点。
With the box model, 2D ADI tidal current equation and convectiondiffusion model, the exchange time of Xunjiang bay water is computated.
运用待定系数法，建立了求解二维对流扩散方程的HAUC2格式。
By using the undetermined coefficient method, a new scheme is derived from the HAUC2 scheme to simulate the two dimensional convection-diffusion equation.
为求解二维的奇异摄动反应扩散边界层问题，研究了新的多尺度有限元法。
The multi-scale finite element method is applied in the 3-D groundwater flow simulation problems in heterogeneous porous media.
为求解二维的奇异摄动反应扩散边界层问题，研究了新的多尺度有限元法。
The multi-scale finite element method is applied in the 3-D groundwater flow simulation problems in heterogeneous porous media.
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