计算物理 ›› 1996, Vol. 13 ›› Issue (1): 7-13.

• 论文 • 上一篇    下一篇

有限元方法在中子测井数值模拟中的应用

张金涛1, 吴宏春1, 马逸尘1, 谢仲生2, 钟振千2, 方映东2   

  1. 1. 西安交通大学, 西安 710049;
    2. 江汉测井研究所
  • 收稿日期:1994-05-07 修回日期:1995-10-23 出版日期:1996-03-25 发布日期:1996-03-25

APPLICATIONS OF THE FINITE-ELEMENT METHOD IN NUMERICAL SIMULATION OF NEUTRON WELL-LOGGING

Zhang Jintao1, Wu Hongchun1, Ma Yichen1, Zhong Zenqian2, Fang Yingdong2, He Qingyuan2   

  1. 1. Xi'an Jialtong University Xi'an 710049;
    2. Jiang Han Petroleum logging Research institute
  • Received:1994-05-07 Revised:1995-10-23 Online:1996-03-25 Published:1996-03-25

摘要: 讨论了有限元方法在中子测井数值模拟中的应用。用有限元方法求解多群P1近似中子输运方程,编制了二维有限元程序FEMLOG,并对中子测井问题进行了数值计算。所得结果同国际通用的二维SN程序的计算结果进行了比较,二者符合良好,但其计算速度比SN方法快得多。

关键词: 有限元方法, 中子测井, 输运方程, 数值模拟

Abstract: This paper deals mainly with applications of the finite-element method in numerical simulation of neutron well-logging.In the frame of multigroup P1 approximation the neutron transport equation is soluted by using finite-element method and the two-dimentional finite-element code FEMLOG is developed for the numerical simulation of neutron well-logging.The precision of numerical results of FEM-LOG is satisfactorily comparable to that of the international common code DOT4.2.However FEM-LOG is operated on the computer far faster than DOT4.2.

Key words: finte-element method, neutron well-logging, transport equation, numerical simulation

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