中心差分

词组短语

central difference · centered difference

与中心差分相关的网络例句 [注：此内容来源于网络，仅供参考]

In the process of discretization of the auxiliary function, the traditional central difference formula is replaced by the backward difference formula, and numerical results show the method is of good stability.

在辅助函数的离散过程中用后向差分公式代替传统的中心差分公式，数值结果显示出良好的稳定性。

This scheme divides center difference to forward and backward one-side difference operators which are combined in 4-6 steps Runge-Kutta time integration.

此格式将中心差分算子分成前向和后向两个空间单边差分，然后在4-6步Runge-Kutta时间积分中使用单边差分组合。

A one-sided difference approximation is used for convection terms and a second-order central difference approximation for diffusion term.

二阶一边差分逼近用于对流项的离散，二阶中心差分逼近用于扩散项的离散。

For convection dominated diffusion equations with constant coefficients, the implicit scheme is consistent,unconditionally stable and its L~2 error estimation is derived.

对常系数的对流占优扩散方程而言，基于一边有限差分和中心差分的隐格式是相容的并且无条件稳定，对应L~2误差估计被推导。

This model used the finite—difference approximation to the advection— dispersion equation. The spatial derivatives in the flow equation are approximated by central difference written about grid—block boundaries and time derivatives are approximated by a fully implicit backward scheme.

水流方程的空间导数采用中心差分格式离散，时间导数采用隐式差分格式离散，建立了土壤水分和污染物在各种饱和度的条件下迁移转化方程耦合求解的二维数值计算模型。

With the knowledge of linear algebra, general formula for arbitrary order Taylor finite difference has been derived. In this paper, the analysis of spectral property and computational error of arbitrary order TFD is presented in detail. Then it is applied into the numerical solution of Maxwell's equations. Stability condition and numerical dispersion relation are derived.

本文借助于采样定理，详细分析了不同阶Taylor中心差分格式的谱特性以及计算误差，并将任意阶Taylor中心差分格式用于数值求解麦克斯韦方程中，严格导出了稳定性条件和数值色散关系的表达式，引入了新的误差定义来衡量算法的好坏。

In the method of numerical analysis, the spatial part of equation system in strong conservation form is first discretized by conventional central finite-difference approximation and then the system of partial differential equations becomes a system of ordinary difference equations.

本文所建数值方法的基本空间离散格式是中心差分，并用源于Jameson的标量耗散模型抑制数值波动；采用经典四阶龙格—库塔法积分经过空间离散后得到的常微分方程组当残差足够小时的解为稳态解。

Equations are differenced by control volume algorithm , convection term is differenced by up wind difference algorithm , diffusion term and continuity equation are differenced by central difference algorithm .

采用控制容积法对控制方程组进行离散，对流项采用迎风差分格式，扩散项、连续方程采用中心差分格式。

The wave equation of electric in the waveguide can be translated into a coupled difference equation of second order by centered differency approximation.

通过中心差分法可将电场满足的波动方程化为一组耦合二阶差分公式形式。

The finite difference time-domain method is stable and easy to be used, but due to the fact that it approximates the space derivatives in Maxwells curlequations by central difference, FDTD usually requires more than 20 grids perwavelength to achieve acceptable accuracy. As a contrast, pseudospectraltime-domain method approximates the space derivatives by pseudospectralmethod, which guarantees the accuracy, theoretically requiting only 2 grids perwavelength.

传统的电磁场数值算法——时域有限差分法稳定而易于实现，但由于FDTD采用中心差分近似Maxwell旋度方程的微分，每个波长上需要取的网格数通常较多，而时域伪谱法采用伪谱法求微分，理论上每个波长只需要取两个网格便可以达到较高的精度。

与中心差分相关的网络解释 [注：此内容来源于网络，仅供参考]

central derivative：中心导数,中心微商

中央控制室 central control room | 中心导数,中心微商 central derivative | 中心差分插值法 central difference interpolation

central difference operator：中心差分算子

central difference 中心差分 | central difference operator 中心差分算子 | central divided difference 中心均差

central difference：中心差分

central derivative 中心导数 | central difference 中心差分 | central difference operator 中心差分算子

central difference notation：中央差分记法

central deafness 中枢性聋 | central difference notation 中央差分记法 | central disposition 中心气质

central difference notation：中心差分记法

central difference interpolation 中心差分插值法 | central difference notation 中心差分记法 | central difference operator 中心差分算子

central difference method：中心差分法

central control room 中央控制室 | central difference method 中心差分法 | central force 中心力

central difference interpolation：中心差分插值法

central dehydration complex 集中脱水装置 | central difference interpolation 中心差分插值法 | central difference notation 中心差分记法

central difference schemes：中心差分格式

关阀方案:schemes of valve shutdown | 中心差分格式:central difference schemes | 半离散格式:semi-discrete central schemes

central divided difference：中心均差

central difference operator 中心差分算子 | central divided difference 中心均差 | central element 中心元

meshless nine-point difference：无网格九点差分法

多重人格:manifold personalities | 无网格九点差分法:meshless nine-point difference | 中心流形定理:center manifold theorem