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【答案】应助回帖
感谢参与，应助指数 +1
Accession number:
20144200103367
Title: LEMP calculation of cloud-to-ground lightning based on multi-resolution time-domain method
Authors: Jiang, Zhidong1 Email author jzd19851102@126.com; Zhou, Bihua1; Liu, Yawen1; Yang, Bo1
Author affiliation: 1 National Key Laboratory on Electromagnetic Environment and Electro-Optical Engineering, PLA University of Science and Technology, Nanjing; Jiangsu, China
Corresponding author: Jiang, Zhidong
Source title: Dianbo Kexue Xuebao/Chinese Journal of Radio Science
Abbreviated source title: Dianbo Kexue Xuebao
Volume: 29
Issue: 4
Issue date: August 1, 2014
Publication year: 2014
Pages: 653-657
Language: Chinese
ISSN: 10050388
CODEN: DKEXFT
Document type: Journal article (JA)
Publisher: Chinese Research Institute of Radiowave Propagation
Abstract: In order to improve the calculation efficiency of fields radiated by cloud-to-ground lightning return stroke, a multi-resolution time-domain (MRTD) method is proposed for cloud-to-ground lightning LEMP calculation. In 2-D cylindrical coordinates, scaling function of Daubechies wavelet is chosen for field expansion, and iterative formula of MRTD method is derivated. The PML absorbing boundary conditions is adopted to truncate the computational domain. LEMP of different distance off the lightning channel was calculated. The results obtained with the finite-difference time-domain method (FDTD) are compared with the MRTD method. Numerical simulation results show that the MRTD method and FDTD method are consistent in calculating LEMP fields. The MRTD method can significantly save both computational memory and CPU computation time with large gird mesh, as well as good numerical dispersion property. Copyright ©2014 by Editorial Department of Chinese Journal of Radio Science
Number of references: 12
Main heading: Time domain analysis
Controlled terms: Clouds - Computer simulation - Discrete wavelet transforms - Electromagnetic pulse - Finite difference time domain method - Iterative methods - Lightning - Numerical methods
Uncontrolled terms: Absorbing boundary condition - Calculation efficiency - Cloud-to-ground lightning - Cylindrical coordinates - Finite difference time domains - Finite-difference time-domain (FDTD) methods - Lightning electromagnetic pulse - Resolution time
Classification code: 443 Meteorology - 443.1 Atmospheric Properties - 701 Electricity and Magnetism - 701.1 Electricity: Basic Concepts and Phenomena - 723.5 Computer Applications - 921 Mathematics
DOI: 10.13443/j.cjors.2013080101
Database: Compendex
Compilation and indexing terms, © 2015 Elsevier Inc. |
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