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.

在輔助函數(shù)的離散過程中用后向差分公式代替?zhèn)鹘y(tǒng)的中心差分公式色哟哟天天操，數(shù)值結(jié)果顯示出良好的穩(wěn)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.

此格式將中心差分算子分成前向和后向兩個(gè)空間單邊差分亚洲一级簧片在线观看，然后在4-6步Runge-Kutta時(shí)間積分中使用單邊差分組合18禁美女裸体露私密部位图片。

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

二階一邊差分逼近用于對(duì)流項(xiàng)的離散，二階中心差分逼近用于擴(kuò)散項(xiàng)的離散深夜福利国产片。

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

對(duì)常系數(shù)的對(duì)流占優(yōu)擴(kuò)散方程而言人人干人人操A片，基于一邊有限差分和中心差分的隱格式是相容的并且無條件穩(wěn)定西西大胆欧美午夜视频，對(duì)應(yīng)L~2誤差估計(jì)被推導(dǎo)。

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.

水流方程的空間導(dǎo)數(shù)采用中心差分格式離散A片视频在线播放免费，時(shí)間導(dǎo)數(shù)采用隱式差分格式離散欧美老妇与人性交大战，建立了土壤水分和污染物在各種飽和度的條件下遷移轉(zhuǎn)化方程耦合求解的二維數(shù)值計(jì)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.

本文借助于采樣定理日韩不卡一级毛片免费，詳細(xì)分析了不同階Taylor中心差分格式的譜特性以及計(jì)算誤差好男人社区WWW在线资源，并將任意階Taylor中心差分格式用于數(shù)值求解麥克斯韋方程中，嚴(yán)格導(dǎo)出了穩(wěn)定性條件和數(shù)值色散關(guān)系的表達(dá)式一级黄色视频女人射精，引入了新的誤差定義來衡量算法的好壞无码色色色。

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.

本文所建數(shù)值方法的基本空間離散格式是中心差分，并用源于Jameson的標(biāo)量耗散模型抑制數(shù)值波動(dòng)免费人人插人人操；采用經(jīng)典四階龍格—庫(kù)塔法積分經(jīng)過空間離散后得到的常微分方程組當(dāng)殘差足夠小時(shí)的解為穩(wěn)態(tài)解免费人成在线观看网。

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 .

采用控制容積法對(duì)控制方程組進(jìn)行離散，對(duì)流項(xiàng)采用迎風(fēng)差分格式免费网站华人，擴(kuò)散項(xiàng)最黄一级黄色自拍偷拍免费小视频、連續(xù)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.

通過中心差分法可將電場(chǎng)滿足的波動(dòng)方程化為一組耦合二階差分公式形式亚洲天堂黄色网站b性爱。

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.

傳統(tǒng)的電磁場(chǎng)數(shù)值算法——時(shí)域有限差分法穩(wěn)定而易于實(shí)現(xiàn)另类小说人亚洲小说，但由于FDTD采用中心差分近似Maxwell旋度方程的微分，每個(gè)波長(zhǎng)上需要取的網(wǎng)格數(shù)通常較多48手机无码免費在线，而時(shí)域偽譜法采用偽譜法求微分欧美日韩国产VA在线观看免费，理論上每個(gè)波長(zhǎng)只需要取兩個(gè)網(wǎng)格便可以達(dá)到較高的精度。

central derivative：中心導(dǎo)數(shù),中心微商

中央控制室 central control room | 中心導(dǎo)數(shù),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 中心導(dǎo)數(shù) | central difference 中心差分 | central difference operator 中心差分算子

central difference notation：中央差分記法

central deafness 中樞性聾 | central difference notation 中央差分記法 | central disposition 中心氣質(zhì)

central difference notation：中心差分記法

central difference interpolation 中心差分插值法 | central difference notation 中心差分記法 | 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 集中脫水裝置 | central difference interpolation 中心差分插值法 | central difference notation 中心差分記法

central difference schemes：中心差分格式

關(guān)閥方案:schemes of valve shutdown | 中心差分格式:central difference schemes | 半離散格式: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：無網(wǎng)格九點(diǎn)差分法

多重人格:manifold personalities | 無網(wǎng)格九點(diǎn)差分法:meshless nine-point difference | 中心流形定理:center manifold theorem