time discretization meaning in English

时间离散化

Examples

In rotating frame of reference , the construction method of three dimensional finite volume tvd schemes is systemically analyzed , in which implicit euler defiference is applied for time discretization
在旋转坐标系下，发展了一种含旋转源项的雷诺平均navier - stokes方程的三维有限体积tvd格式，时间离散采用隐式euler方法。
On the basis of some conclusion , we have proved that the schemes have second - order convergence accuracy for the time discretization , a two - level method for resolving the nonlinearity in finite element approximation of the stationary conduction - convection problems is presented
在某些已有结论的基础之上，我们证明了这种格式对于时间离散上的二阶精度。提出了一种解决定常的热传导-对流问题的有限元近似中出现的非线性问题的两层方法。
In this paper , we analyzed and discussed the basic principle of the recently developed high order accuracy finite difference schemes ? eno schemes and weno schemes . based on 2nd order nnd schemes , we introduced a 3rd order wnnd scheme with jiang and shu ' s " weighted " idea and a tvd runge - kutta time discretization method
对于新近发展起来的eno格式和weno格式，本文分析并讨论了其基本构造原理，并且在二阶nnd格式的基础上，利用jiang和shu的加权思想和具有tvd性质的runge - kutta时间离散方法，建立了时、空三阶精度的wnnd格式。
In this paper , a crank - nicolson mixed element method , a nonlinear galerkin mixed element method for the non stationary conduction - convection problems time second order accuracy fully discrete formats and a two - level mixed element method with backtracing for the stationary conduction - convection problems are presented and analyed , respectively , an error analysis are provided for the crank - nicolson method of time discretization applied to spatially discrete galerkin mixed element approximations of the nonstationary conduction - convection problems
本文分别给出了非定常的热传导-对流问题的crank - nicolson混合元法时间二阶精度全离散格式，非线性galerkin混合元法时间二阶精度全离散格式以及定常的热传导-对流问题回溯二重水平法。讨论了时间上的crank - nicolson离散方法应用于非定常的热传导-对流问题的空间离散的galerkin混合元近似。
The conformal microstrip antenna with some unique character has been applied in many fields , especialy on speedy objects . in this paper , an efficient fdtd algorithm is introduced to analyse the microstrip antenna . firstly , the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space . the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively . the shape and setup of the excitation source are discussed too . the excitation source is chosen to be gaussian pulse in shape . secondly , the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system . the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone . finally , three kinds of microstrip antennas are analysed . they are a slot antenna that lies on a plane ground of a microstrip , a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system
本文从麦克斯韦旋度方程出发，建立了笛卡儿坐标下无源空间中均匀无耗媒质的fdtd基本方程和圆柱坐标下无源空间中均匀无耗媒质的fdtd基本方程，详细讨论了fdtd法计算中时间步长和空间步长的选取原则以及激励源的类型和设置；推导了mur一阶和二阶边界条件在圆柱坐标下的差分格式；给出了在用fdtd法计算天线的远场辐射特性时必需采用的频域和时域近场远场变换技术；最后用fdtd法计算了平面微带缝隙天线、柱面共形微带缝隙天线和柱面共形微带层叠天线的输入阻抗和远区辐射场，并分析了天线的一些参数的变化对天线输入阻抗的影响，得出了一些有用的结论。

time discretization meaning in English

Examples

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