查询词典 finite difference approximation

A 2-D coupled numerical model, which is the combination Boussinesq equations solved by finite difference method with Laplace equation solved by boundary element method, is established.

Boussinesq方程与Laplace方程耦合计算模型：1 建立了外域用有限差分法求解Boussinesq方程、内域用边界元法求解Laplace方程的二维耦合计算模型。

The finite difference equation was built by using elemental energy balance of reinforced concrete beam with three surfaces exposing to fire based on the thermal properties of concrete. The influence of the physical or chemical reaction of free or combined water in concrete on the temperature field of concrete was considered by magnifying the specific heat of concrete.

根据三面受火钢筋混凝土梁离散体积单元的能量守恒原理，建立了有限差分平衡方程，在合理确定混凝土热工参数基础上，采用增大混凝土质量热容的方法，考虑混凝土中自由水与结合水的物理化学反应对混凝土温度场的影响。

In this paper, Smith's finite difference solution of one-dimensional wave equation is applied to two prototype steel pipe testpiles(900 mm o.d.with variable wall thickness and lengths of 69 and 72 m)which were driven with open ends in the Bohai oil field of North China.

本文将一维波动方程的史密斯差分解应用于华北渤海油田的两根开口打入的原型钢管试桩(外径900毫米，变壁厚、桩长分别为69及72米)。计算结果与现场实测值(包括以后所进行的静荷载试验)相比甚为符合。

The electrostatic potential was calculated by solving the Poisson- Boltzmanne equation using the finite difference method.

三种金属硫蛋白的静电势通过有限差分方法求解Poisson-Boltzmann方程得到。

The results of transient temperature field calculated by finite difference method and ANSYS software agree with the experimental results.

高压氮气淬冷温度场的有限差分法计算结果和ANSYS有限元分析软件计算结果与实测结果吻合较好。

This paper discusses this topic under consideration of the group structure of finite difference scheme in traditional fluid dynamics.

这种趋势的背景源于流体力学问题本身的强非线性，一般经典的数学手段难于处理，需要引入能对付大范围强非线性问题的数学手段。

Since 1950 s, the research of numerical method for hyperbolic conservation laws is one of key research directions in computational mathematics. The finite difference method, specially TVD and ENO schemes, for hyperbolic conservation laws are very successful.

双曲型守恒律方程数值计算方法的研究，是二十世纪五十年代以来，计算数学中的一个重要研究方向。

We compare the parallel characteristics of spectral element and finite difference from the point of view of communications, communication-to-computation ratio and scalability.

结合以矩阵矢量乘积为主的迭代计算特点，从通信量、通信计算比和并行可扩展性等方面比较分析了离散格式对于并行计算的影响。

A high order finite difference forward modelling method was proposed to improve its efficiency.

为了提高其效率，提出了一种高阶差分正演模拟方法。

On the basis of this, the finite difference forward simulation program of crosswell seismic wave equation was compiled.

在此基础上，编制了跨孔波场交错网格有限差分正演程序，并应用该程序对半空间粘弹性跨孔模型进行了正演计算，得到了震源在不同位置时的波场快照及地震记录图。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。