期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于3-D FDTD微型塔电磁模型电流衰减机制 被引量:3
1
作者 和利霞 张其林 +2 位作者 和宏波 张亮 汤霄 《微波学报》 CSCD 北大核心 2014年第2期88-92,共5页
为研究雷电流在高塔中的传输过程和衰减机制,本文基于三维时域有限差分法(3-D FDTD),建立高度为45cm的微型塔电磁模型,应用理想导体边界条件求解高斯脉冲电流沿塔体表面的时空分布。结果表明,不同形状塔体,表面电流衰减特征不同。锥形... 为研究雷电流在高塔中的传输过程和衰减机制,本文基于三维时域有限差分法(3-D FDTD),建立高度为45cm的微型塔电磁模型,应用理想导体边界条件求解高斯脉冲电流沿塔体表面的时空分布。结果表明,不同形状塔体,表面电流衰减特征不同。锥形塔的表面电流衰减具有方向性,自塔顶向塔底传播时,幅值几乎无衰减,方向相反时,有显著衰减。柱形塔的表面电流自塔顶向塔底以及反向传播时,幅值均有明显衰减。塔体不同高度处电流的衰减程度随着锥形塔顶角和柱形塔半径的增大、激励源频宽的减小而增大。 展开更多
关键词 三维FDTD 电磁模型(EM) 微型塔 锥形 柱形 电流衰减
下载PDF
A study of nonlinear biochemical reaction model 被引量:1
2
作者 Muhammad Asad Iqbal Syed Tauseef Mohyud-Din Bandar Bin-Mohsin 《International Journal of Biomathematics》 2016年第5期121-129,共9页
The present study deals with the introduction of an alteration in Legendre wavelets method by availing of the Picard iteration method for system of differential equations and named it Legendre wavelet-Picard method (... The present study deals with the introduction of an alteration in Legendre wavelets method by availing of the Picard iteration method for system of differential equations and named it Legendre wavelet-Picard method (LWPM). Convergence of the proposed method is also discussed. In order to check the competence of the proposed method, basic enzyme kinetics is considered. Systems of nonlinear ordinary differential equations are formed from the considered enzyme-substrate reaction. The results obtained by the proposed LWPM are compared with the numerical results obtained from Runge-Kutta method of order four (RK-4). Numerical results and those obtained by LWPM are in excellent conformance, which would be explained by the help of table and figures. The proposed method is easy and simple to implement as compared to the other existing analytical methods used for solving systems of differential equations arising in biology, physics and engineering. 展开更多
关键词 Legendre wavelets method Picard iteration method nonlinear biochemical reaction model Runge- Kutta method of order four.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部