查询词典 numerical coding

Based on the coupling numerical solving method, the velocity distribution and flow behavior of Ar in a ladle furnace lid was calculated and analyzed by numerical simulation.

采用耦合数值求解的方法，计算并分析了LF精炼炉盖内气体流动的速度分布状态以及液面附近惰性气体氩的流动行为和分布。

Based on the coupling numerical solving method, the velocity distribution and flow behavior of Ar in a ladle furnace lid was calculated and analyzed by numerical simulation.

采用耦合数值求解的方法，计算并分析了LF精炼炉盖内气体流动的速度分布状态以及液面附近惰性气体氢的流动行为和分布。

The present study focuses on some important aspects of LES technology. It includes review of LES development, fundamental theory and equations and numerical implementation. The procedure of LES consists of filtering Navier-Stokes equation, modeling subgrid scale, closuring the set of equations and solving the numerical equations.

本文对大涡模拟的研究集中在以下几个方面：首先回顾了大涡模拟技术发展的历程，它的理论基础与滤波方程组，以及它在CFD程序中的数值模拟实现：包括滤波NS方程，模化亚网格量，封闭滤波方程，求解滤波方程。

The Navier-Stockes equations are solved in the numerical space and the numerical results are reversed into the physical space to give the real characteristics of the convecting combustion field.

将数值空间中的模拟结果反变换到物理空间中，就得到了实际的对流燃烧流场特性。

Secondly, we study numerical approximation in terms of numerical fluxes.

其次，以讨论数值流通量的方式，我们研究一般的数值逼近理论。

First, a full three-dimensional numerical model is developed, which considering not only the rib resistance to the species, but both the single- and two-phase flow and transport in the gas channels and diffusers at both the anode and cathode sides of PEM fuel cell. Two sets of boundary conditions, one for a conventional flow field and the other for an interdigitated one, are presented. A detailed discussion of the numerical techniques for the PEM fuel cell model is given with a flow diagram to provide an overview of the solution procedure using FORTRAN language.

该模型考虑了双极板上流道间的筋部对于反应气体传递阻力以及电流密度分布的影响，从而使模型具有三维特性；建模过程中进一步考虑了流道和扩散层中可能存在的液态水，从而将现有的单相流动模型拓展成为两相流动模型，因此，该模型可以同时模拟电池内部阴极、阳极侧流道和扩散层中两相流动的发生和分布情况；分别给出了平行流场燃料电池和交指型燃料电池的边界条件；详细讨论的三维模型的耦合求解算法和技巧；用实验数据验证的该模型的准确性。

For further enhances the numerical control engine laths the processing efficiency, the numerical control engine laths is clamping to the work piece in an engine laths attire then completes the multi-channel working procedure or the complete working procedure processing direction develops, therefore appeared each kind of type processing center engine laths, ike the turning center, the boring mill processing center, drills truncates center and so on.

为进一步提高数控机床的加工效率，数控机床正向着工件在一台机床一次装夹即可完成多道工序或全部工序加工的方向发展，因此出现了各种类型的加工中心机床，如车削中心、镗铣加工中心、钻削中心等等。

According to the three deferent site selection methods, this thesis takes three transformations. The positive transformation (the numerical value larger, the result better) and the negative transformation (the numerical value smaller, the result better) are all included. A Matlab program is developed to predigest the osculating value method.

根据三种不同的铁路垃圾卫生填埋场选址方法，分别运用了三种不同的转化方法，对选址指标的正向和逆向进行不同的转化，开发出一个MatLab程序使得密切值法的运用更为简捷。

Numerical simulations showed the axial velocity in the precessing flow were decreased significantly because of the entrainment of ambient air. The swirling motion, the wall attachment effect and the reverse flow were also found in the numerical flow field. It is shown that the simulation results of the precessing jet flow accord well with the analysis and the previous work.

数值模拟表明旋进射流的轴向流动速度衰减得很快，流场中存在明显的旋流、附壁效应和反向回流现象，所得到的结果与已有的分析结论基本吻合。

By studying the numerical simulation technology of sheet metal formation in recent decades,the article puts forward a method for redeveloping friction model of numerical simulation of sheet metal formation on the basis of ABAQUS.

对近年来兴起的板料成形过程数值模拟新技术研究，提出了一种基于ABAQUS的板料成形数值模拟摩擦模型的二次开发及实现的方法。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。