辛时域有限差分,symplectic finite difference time domain
1)symplectic finite difference time domain辛时域有限差分
1.Maxwell’s equations in the time direction were discretized using sympletic propagation technique and then the equations in the spatial direction with fourth-order finite difference approximations were evaluated to constructsymplectic finite difference time domain (S-FDTD) scheme.在时间方向上,借助辛传播子技术对方程进行离散以保持方程的内在结构;在空间方向上,采用四阶精度的有限差分格式对三维旋度算符进行差分离散,建立了求解Maxwell方程的辛时域有限差分(S-FDTD)方法。
2.We discretize Maxwell\"s equations using sympletic propagation technique combined with fourth-order finite difference approximations to constructsymplectic finite difference time domain(SFDTD) scheme.利用辛传播子技术结合高阶差分格式对方程进行离散以保持方程的内在结构,建立了求解Maxwell方程的辛时域有限差分(SFDTD)算法。
2)Symplectic Finite-Difference Time-Domain辛时域有限差分法
3)finite-difference time-Domain时域有限差分法
1.This paper studies the EM Radiation and shield of monopole handset with the extrapolation which is suitable for the Finite-Difference Time-Domain(FDTD).用时域有限差分法(FDTD)的一种外推法研究了单极天线手机近场辐射及屏蔽。
2.In this paper,the in- fluence of the coupling aperture on the sound energy decay and coupling constant in the primary room is investigated by means of the finite-difference time-domain method,and the investigation is limited within the low-frequency range.文中运用时域有限差分法,在低频范围内模拟了耦合窗面积的改变对主厅中不同位置的耦合常数和声能衰减的影响。
3.The compact finite-difference time-domain(CFDTD) method was employed to simulate the dispersion properties in an electromagnetic band gap(EBG) waveguide which was uniform in the propagation direction.建立了紧凑格式二维时域有限差分法(CFDTD)模型,利用二维网格划分计算三维传播问题,简化了计算量。
英文短句/例句
1.Design of Integrated Antennas Using FDTD;基于时域有限差分法的集成天线设计
2.Research of the Multi-conductor Transmission Lines with the Finite Difference-Time Domain Method;多导体传输线的时域有限差分法研究
3.The Applications in the Optical Fields of the Optical Fiber by the Finite-Difference Time-Domain Method;时域有限差分法在光纤光场中的应用
4.Finite Difference Time Domain Simulation Curves of the Microbe Growth时域有限差分法模拟微生物生长曲线
5.Time Domain Finite Difference Method in the Sub-gridded Media on Multi-media Zone;多媒质区域介质子网格时域有限差分法
6.Research on Algorithms for Implementing Perfectly Matched Layers in the Finite Difference Time Domain Method;时域有限差分法中完全匹配层的实现算法研究
7.Research on Finite Differential Method of Lossy Uniform Transmission Line in Time Domain;有损均匀传输线的时域有限差分法研究
8.The Analysis and Design of Slot Antenna Based on Finite-Difference Time-Domain Method;基于时域有限差分法的裂缝天线分析与设计
9.The Analysis and Design of Smart Antennas Using FDTD;智能天线的时域有限差分法分析与设计
10.Analysis of Cross-feed Omni-directional Patch Antenna Using Finite-Difference Time-Domain Algorithm交叉馈电微带全向天线的时域有限差分法分析
11.Study of Some Key Problems of the Finite-Difference Time-Domain Method and its Applications时域有限差分法关键问题研究及其应用
12.Development of an EM Simulation Software Based on the FDTD Method基于时域有限差分法的电磁仿真软件研制
13.The Study of the Near-field of Metallic Nanostructure Based on the Finite-difference Time-domain Method;纳米结构近场光波的时域有限差分法研究
14.Investigation of the FDTD Method for Electromagnetic Field;电磁场计算中的时域有限差分法的研究
15.Research and Application of the Finite-difference Time-domain Method in the Computation of Shielding Effectiveness;时域有限差分法在屏蔽效能计算中的应用研究
16.Research and Design of RFID Tag Antenna Using FDTD;基于时域有限差分法的RFID标签天线研究设计
17.The Application of FDTD in Signal Integrity;时域有限差分法在信号完整性中的应用
18.Finite Difference Time Domain Method and its Application in Electromagnetic Compatibility Analysis;时域有限差分法及其在电磁兼容中的应用
相关短句/例句
Symplectic Finite-Difference Time-Domain辛时域有限差分法
3)finite-difference time-Domain时域有限差分法
1.This paper studies the EM Radiation and shield of monopole handset with the extrapolation which is suitable for the Finite-Difference Time-Domain(FDTD).用时域有限差分法(FDTD)的一种外推法研究了单极天线手机近场辐射及屏蔽。
2.In this paper,the in- fluence of the coupling aperture on the sound energy decay and coupling constant in the primary room is investigated by means of the finite-difference time-domain method,and the investigation is limited within the low-frequency range.文中运用时域有限差分法,在低频范围内模拟了耦合窗面积的改变对主厅中不同位置的耦合常数和声能衰减的影响。
3.The compact finite-difference time-domain(CFDTD) method was employed to simulate the dispersion properties in an electromagnetic band gap(EBG) waveguide which was uniform in the propagation direction.建立了紧凑格式二维时域有限差分法(CFDTD)模型,利用二维网格划分计算三维传播问题,简化了计算量。
4)FDTD method时域有限差分法
1.A fast equivalence algorithm of RCS based onFDTD method;计算二维雷达散射截面的一种快速等效算法——时域有限差分法
2.The Application Study of FDTD Method to Simulate of Electromagnetic Field Around EHV Transmission Line;时域有限差分法在超高压输电线电磁场仿真中的应用研究
3.By employingFDTD method and simulating the effects of electromagnetic on the heart of human body, the eddy-currents of the heart of human body induced by MRI time-varying gradient fields are computed and compared with the recommended threshold.运用时域有限差分法(FDTD),通过电磁场对人体心脏影响的模型仿真,计算出心脏体段由磁共振成像(MRI)时变梯度场感应的涡流,并与已有的心脏刺激阈值进行比较。
5)FDTD时域有限差分
1.The Transmission Properties Research of Photonic Crystal Slab W3 Waveguide With The Use of The Parallel 3DFDTD Algorithm;用三维并行时域有限差分算法研究光子晶体薄板W3波导传输特性
2.A New Setup Method of Electric Dipole Source inFDTD Grids;电偶极子源在时域有限差分网格中设置的一种新方法
3.FDTDFOREMPFIELDANALYSISINDIELECTRICCYLINDER;利用时域有限差分法分析和计算介质柱内瞬态场分布
6)finite-difference time-domain method时域有限差分法
1.This expressions have been applied to calculate the radiation boundary conditions (RBC) of the conner points in thefinite-difference time-domain method.该文导出了两维四节点和三维八节点Lasrange线性内插函数、适用于编程和计算的实用表示式,并给出其在时域有限差分法(FD-TD)计算角点辐射边界条件(RBC)中的推广应用。
2.The phenomenon of spectral splitting in multiple quantum well(MQW)structures composed of one-dimensional photonic crystals is investigated byfinite-difference time-domain method.用时域有限差分法研究了一维光子晶体多量子阱中的谱线分裂现象,揭示了光子隧穿多量子阱时谱线分裂的规律性。
3.The optical properties of two port wavelength division device have been demonstrated theoretically byfinite-difference time-domain method and plane wave method, in addition we study the transmission rate in the output port of this device under a given coupling length, the result indicate that choosing the appropriate coupling length can make light to expo.采用时域有限差分法和平面波法作为研究工具,从理论上分析了这种器件的特性,在一定耦合长度下研究光在输出端的透射率,结果表明,选择适当的耦合长度可以使光在两个端口高效率输出。
延伸阅读
有限差分法有限差分法finitedifferencemethod微分方程和积分微分方程数值解的方法。基本思想是把连续的定解区域用有限个离散点构成的网格来代替,这些离散点称作网格的节点;把连续定解区域上的连续变量的函数用在网格上定义的离散变量函数来近似;把原方程和定解条件中的微商用差商来近似,积分用积分和来近似,于是原微分方程和定解条件就近似地代之以代数方程组,即有限差分方程组,解此方程组就可以得到原问题在离散点上的近似解。然后再利用插值方法便可以从离散解得到定解问题在整个区域上的近似解。有限差分法的主要内容包括:如何根据问题的特点将定解区域作网格剖分;如何把原微分方程离散化为差分方程组以及如何解此代数方程组。此外为了保证计算过程的可行和计算结果的正确,还需从理论上分析差分方程组的性态,包括解的唯一性、存在性和差分格式的相容性、收敛性和稳定性。对于一个微分方程建立的各种差分格式,为了有实用意义,一个基本要求是它们能够任意逼近微分方程,这就是相容性要求。另外,一个差分格式是否有用,最终要看差分方程的精确解能否任意逼近微分方程的解,这就是收敛性的概念。此外,还有一个重要的概念必须考虑,即差分格式的稳定性。因为差分格式的计算过程是逐层推进的,在计算第n+1层的近似值时要用到第n层的近似值,直到与初始值有关。前面各层若有舍入误差,必然影响到后面各层的值,如果误差的影响越来越大,以致差分格式的精确解的面貌完全被掩盖,这种格式是不稳定的,相反如果误差的传播是可以控制的,就认为格式是稳定的。只有在这种情形,差分格式在实际计算中的近似解才可能任意逼近差分方程的精确解。关于差分格式的构造一般有以下3种方法。最常用的方法是数值微分法,比如用差商代替微商等。另一方法叫积分插值法,因为在实际问题中得出的微分方程常常反映物理上的某种守恒原理,一般可以通过积分形式来表示。此外还可以用待定系数法构造一些精度较高的差分格式。