数值方法

In Chapter 1, we summarize the known numerical methods for solving the partial differential equations.

其中，第一章简单介绍已知的解偏微分方程的数值方法。

Then flow conservation equation, k-ε turbulence model, particle movement model and numerical schemes are detailed.

较详细地介绍了CFD中流动控制方程、紊流模型、粒子运动模型，以及数值方法。

This paper studied on electromagnetic field computation Poisson equation, and built discrete equation for resolve in EFGM.

无网格法作为一种新兴的数值方法，解除了节点的网格束缚，能够消除由于网格存在所带来的缺陷。

In order to increase the detection speed, by using mixing particle sets to express the posterior probability distribution and adopting the Monte Carlo numerical methods to calculate the mixing weights, the fast fault detection algorithm is proposed based on the estimate window method.

为了提高故障检测的速度，采用混合粒子集表达后验概率分布，并由Monte Carlo数值方法优化得到各粒子集的加权值，据此提出了基于估计窗的快速故障检测算法。

The essence idea of restoration based on Total Variation is that translate the problem into minimum of energy functional with TV regularization, then the Partial Differential Equations are got from the principle of variation, finally after discretization the optimal resolution with the numerical methods is obtained.

基于整体变分的图像恢复概括的说就是把图像恢复问题形式化为带有整体变分正则化项的图像能量泛函极值问题，采用变分原理将其中的最小化问题转为所要求解的偏微分方程，即Euler-Lagrange方程，利用数字图像本身的离散特征使用适当的数值方法来求它的最优解，最后达到逼近原始图像的目的。

The frictional contact problem of tread element with rigid road surface is calculated by using numerical method.

运用数值方法对胎面橡胶单元与刚性路面相互作用时的摩擦接触问题进行了计算研究。

Temperature distributions of the diode cathode of W and Mo are calculated by finite diffe- rence under different conditions.

采用数值方法计算了常用基底W、Mo阴极金属丝在不同条件下的温度分布，同时首次给出了这两种材料在宽温区内导热系数、辐射系数的计算公式。

By means of the numerical methods, the root of the resonance frequency equation is solved, and by means of Ansys software and the finite element method, the torsional vibration mode of the thin ring is analyzed, and the academic value and the simulant value of the resonance frequency are compared.

利用数值方法，求出了共振频率的理论值；并利用Ansys软件，对薄圆环振子进行了有限元模拟，得到了其共振频率的模拟值。

The hidden functions in the dynamics model are found out by using numerical methods such as Runge Kutta method and Finite Element method.

设计一种基于压杆屈曲原理的数字微镜装置，针对该装置建立机电动力学模型，应用龙格库塔法和有限元数值方法求解其动力学模型中的隐函数。

The simulation job of saturator is performed based on the founded model, in which the difference between Lewis factor and Lewis number and also the impact of the Lewis factor value on simulation results is discussed in details.

根据饱和器数学模型，运用数值方法模拟和分析了饱和器的工作特性，重点讨论了Lewis因子和Lewis数之间的关系，并分析了Lewis因子的取值对模拟结果的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐