计算物理 ›› 2023, Vol. 40 ›› Issue (6): 727-734.DOI: 10.19596/j.cnki.1001-246x.8664

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基于混合碰撞检测的嵌入式离散裂缝模型前处理算法

刘祎琳1,2(), 高国忠1,2,*()   

  1. 1. 长江大学非常规油气省部共建协同创新中心, 湖北 武汉 430100
    2. 长江大学地球物理与石油资源学院, 湖北 武汉 430100
  • 收稿日期:2022-11-04 出版日期:2023-11-25 发布日期:2024-01-22
  • 通讯作者: 高国忠
  • 作者简介:刘祎琳, 女, 硕士, 研究方向为裂缝预测、裂缝模型及数值模拟, E-mail: liuyilin@yangtzeu.edu.cn
  • 基金资助:
    长江大学非常规油气省部共建协同创新中心开放基金(UOG2022-05)

Embedded Discrete Fracture Model Pre-processing Algorithm Based on Collision Detection

Yilin LIU1,2(), Guozhong GAO1,2,*()   

  1. 1. Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan, Hubei 430100, China
    2. College of Geophysics and Petroleum Resources, Yangtze University, Wuhan, Hubei 430100, China
  • Received:2022-11-04 Online:2023-11-25 Published:2024-01-22
  • Contact: Guozhong GAO

摘要:

基于嵌入式离散裂缝模型, 针对前处理算法中裂缝面与基质网格相交计算的关键问题, 进行算法实现与优化。首先, 通过裂缝包围盒与基质网格进行碰撞检测, 来快速判断裂缝面与基质网格是否相交; 其次, 在确定相交后作交点计算, 了解基质内包含裂缝情况; 最后, 对基质与网格相交情况进行非相邻连接分类。数值实验证明该方法的有效性。

关键词: 裂缝, 嵌入式离散裂缝模型, 碰撞算法, 相交算法

Abstract:

Based on the embedded discrete fracture model, an algorithm is implemented and optimized for the key problem of the intersection calculation of the fracture surface and the matrix grid in the preprocessing algorithm. Firstly, the collision detection between the fracture bounding box and the matrix grid is used to quickly determine whether the fracture surface and the matrix grid intersect. Secondly, after determining the intersection, calculate the intersection point to see if the matrix contains fractures. Finally, classify the intersection of the matrix and the grid. Experiments have demonstrated the effectiveness of the method.

Key words: fracture, embedded discrete fracture model, collision algorithm, intersection algorithm

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