查询词典 numerical method

The discrete equation was deduced by control volume integral method, and realized by numerical method.

用控制容积积分法导出了离散方程，并用数值方法进行了求解。

In this paper,a three dimensional elastic plastic hydrodynamical numerical method and the code MEPH3D using this method which can be used on high speed impact problems are introduced.

介绍一种可用于高速碰撞问题数值模拟的三维弹塑性流体动力学数值计算方法，以及应用该方法研制的应用软件MEPH3D，并给出了一些高速碰撞问题的数值计算结果，计算结果表明该程序具有计算三维高速碰撞问题的能力。

In the last chapter of this paper, several remarks of this study were discussed. Considering saving the computer memory and increasing the calculation speed, the Pseudospectral time-domain numerical method is more effective than the FDTD method.

从节约计算机内存和提高计算速度方面考虑，电磁场数值计算建议采用时域伪谱算法来代替时域有限差分法，并进行了相应的比较和分析。

The main characteristics of seismic source function in underground explosion are studied by seismological method and numerical method.

结合地震反演方法和数值计算方法，研究了地下爆炸震源函数的特征以及介质特性对震源函数的影响。

Level set method introduced by Osher and Sethian is a numerical method, which translates the problem of evolution of 2-D (3-D) close curve into the evolution of level set function in the space with higher dimension. Level set is an accurate and steady algorithm; it can treat with the change of topology naturally.

水平集方法是由Osher和Sethian提出的一种数值计算方法，它将二维的闭合曲线的演化问题转化为高维空间中水平集函数曲面演化的隐含方式来求解，具有拓扑结构可自然变化、计算精度高、算法稳定的特点。

Based on multi-conductor transmission lines and dipole method, a numerical method to predict the transient electromagnetic environments due to the operation of switches in air-insulated substation is proposed. After a model of busbars in a 500kV substation is set up, the transient electromagnetic field is predicted.

4提出了将多导体传输线时域有限差分法和电偶极子法相结合的空气绝缘变电站瞬态电磁环境数值预测方法，并对一座500kV变电站开关操作产生的瞬态电磁环境进行了预测计算，获得了可用于指导二次设备下放后其电磁屏蔽设计的关键数据。

In the couping solution, based on the characteristics of the models in this dissertation, each of loading step is finished in unit time. Thus the volumetric strains on the current increment step as analysis parameters are inserted into the equation of continuity and a physical equation for pore water pressure is presented. The fundamental solutions of two kinds of classic problems (axial symmetry and plane strain) are derived. By use of the fundamental solutions of pore water pressure combined with finite element method of soil mechanics, a semi-analytical and semi-numerical method for nonlinear consolidation equations is presented.

在耦合分析中，根据本文模型的特点，将每一荷载增量步看作单位时间完成，对应当前增量步的体变分量作为分析参数代入连续方程，建立了基于数值模型的孔压变化方程，根据工程中最常见的两类问题推导出基本解，结合土骨架的控制方程建立了此类液-固耦合问题的半解析半数值解答体系，编制了有限元程序，从而实现了从建立本构关系到模拟固结问题的全数值方法。

The drag force between descending packed bed and gas flow is discussed by the drag coefficient of Ergun's equation. The calculation tool is ANSYS-CFX and the numerical method is finite volume method.

两相流中的阻力系数应用流体化床领域的Ergun's equation来探讨气体流经向下移动中的堆料床所造成的作用力。

A Finite Difference Method based regional fine mesh and Fine-to-Coarse alternateiteration numerical method is firstly used to simulate the field emission characteristicsfor three novel field emission triodes.

采用粗细网格反复回代的区域加密有限差分方法，首次对制备所得的三种结构的三极管进行了数值模拟。

In this paper a numerical method—implicit method of finite differences of tidal flow and salinity equations is presented to calculate instantancous salinity in the water taken from the tidal estuary of well-mixed type.

强混合型；无条件稳定；分布状况；计算方法；钱塘江河口；含盐度；潮汐水流；本文介绍一种强混合型河口取水的瞬时含盐度计算方法——潮汐水流和含盐度方程的隐式差分方法。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。