数值方法

But the finite difference methods require that the computational domain is regular, and usually people construct the finite difference scheme for one dimension and then extend it to two or three dimensions in a dimension by dimension fashion.

有限差分方法要求计算区域比较规则，随着工程问题的复杂化，计算区域也变得复杂，这对数值方法提出了新的挑战。

In Chapter Ⅰ, several physical processes and features of relativistic intense laser plasma interaction are given.

第一章，简单介绍了强激光等离子体相互作用的特点、与本文有关的几种物理过程、用到的几种简化模型、理论处理方法和数值方法。

By the intake form of the equations of motion of celestial bodies complex, there is no rigorous analytical solution, common analytical methods and numerical methods seek an approximate solution, the former is called the general perturbation, the latter as a special perturbations.

受摄天体的运动方程形式复杂，没有严格的分析解，常用分析方法和数值方法求近似解，前者称为普遍摄动，后者称为特殊摄动。

At the same time, the article discuss the length of stride to the numerical method changing influence and the difference of the coefficient different same step Runge—kutta method.

讨论了步长的变化对数值方法的影响和系数不同的同阶龙格———库塔方法的差别。

Up to now, most of numerical methods for solving limit and shakedown problems are based on finite element method.

到目前为止，绝大多数求解结构极限与安定问题的数值方法都基于有限元方法。

In this dissertation, the numerical method solving the model equation influid motion in some sense has solved some tough problems which traditionalmethods cannot, as in the case of capturing shockwave, enhancing resolution, andspeeding computation. In terms of capturing shockwave and enhancing resolution,this method has proved to be superior to difference method; in terms of speedingcomputation, superior to TVD scheme. Particularly, it is highly effective to solveodd singular solution problems.

本文研究的求解描述流体运动的若干模型方程的数值方法，在一定程度上解决了传统方法在某些方面的难点问题，如在捕捉激波、提高分辨率方面优于差分法，在计算速度方面优于TVD格式，特别是对处理有奇异解的问题很有效。

With this text, the author proposes an integrated approach to patent risk and capital budgeting in pharmaceutical research and development, developing an option-based view of imperfect patent protection, which draws upon contingent-claims analysis, stochastic game theory, as well as novel numerical methods.

作者提出了一种围绕专利的风险和资本预算中医药研究开发的综合方法，开发一种选择为基础的观点的不完善的专利保护，其中借鉴了特遣队的索赔分析，随机博弈论，以及新颖的数值方法。

With the development of computer, numerical method becomes an effective method to study fruid-particle two phases swirling flow.

随着计算机技术的日益提高，数值方法成为目前研究流体-颗粒两相螺旋流问题的一种有效方法。

The book covers one-, two- and three dimensional problems which are solved by using exact and approximate analytical methods and numerical methods such as: the finite difference method, the finite volume method, the finite element method and the boundary method.

书中涵盖一，二和三是利用精确和近似分析方法和数值方法，如：有限差分法求解二维问题，有限体积法，有限元法和边界法。

In the field of nature and engineering, inverse problems of undetermined parameter are often met.

最近20年来有关偏微分方程反问题的研究，从理论到方法上虽然取得了重大进展，提出了不少有效的数值方法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。