Knowledge Network Node
The Chinese Journal of Nonferrous Metals. 2013, (09) Core

2.5D finite element numerical simulation for electric dipole source on ridge terrainChinese Full Text

ZHANG Ji-feng;ZHI Qing-quan;LI Xiu;FENG Bing;School of Geology Engineering and Geomatics, Chang’an University;

Abstract: The topography seriously affects the distribution of electromagnetic field,and the study on distortion law of topography for the electromagnetic field can make the electromagnetic interpretation more accurate and reliable in the actual data processing work.The electric dipole source electromagnetic field finite element algorithm of 2.5D rugged topography was studied by using arbitrary quadrilateral mesh generation for computational domain.Firstly,the electromagnetic coupled differential equations in wave number domain was deduced,and continuous function was discretized based on the isoparametric element of interpolation,the wave number domain electromagnetic response is obtained for the two dimensional geoelectric section by a nonzero element compact storage and large-scale parallel sparse matrix solver PARDISO.The electromagnetic field space response is got by choosing appropriate wave number of the inverse Fourier transform.The forward key problems,such as the selection of wave number,source selection and the auxiliary field solution,were analyzed and studied,which provide a theoretical guarantee for improving the computation precision and speed.The correctness and high efficient of the algorithm were verified.Finally,the electromagnetic response characteristics of the trapezoidal hill and valley were analyzed.
Keywords：

electric dipole source; isoparametric element; ridge terrain; numerical simulation;

  • DOI：

    10.19476/j.ysxb.1004.0609.2013.09.025

  • Series：

  • Subject：

  • Classification Code：

    P631.325

  • Mobile Reading
    Read on your phone instantly
    Step 1

    Scan QR Codes

    "Mobile CNKI-CNKI Express" App

    Step 2

    Open“CNKI Express”

    and click the scan icon in the upper left corner of the homepage.

    Step 3

    Scan QR Codes

    Read this article on your phone.

  • CAJ Download
  • PDF Download

Download the mobile appuse the app to scan this coderead the article.

Tips: Please download CAJViewer to view CAJ format full text.

Download: 237 Page: 2540-2550 Pagecount: 11 Size: 712K

Related Literature
  • Similar Article
  • Reader Recommendation
  • Associated Author