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多相流数值模拟中复杂地质体网格剖分实现技术

, PP. 1281-1287

Keywords: 计算机应用,PEBI网格,布点方法,三角剖分

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Abstract:

考虑到复杂地质体的网格化剖分建模技术对多相流体数值模拟精准度的影响,提出了基于布点法构建任意多边形、任意约束的PEBI(Perpendicularbisection)多约束、交互式网格剖分实现技术与网格生成算法。网格生成过程包括五个方面:布点;三角剖分;查找不合格三角形,调整点布局;生成泰森多边;进行拓扑重构,生成二维、三维PEBI网格。剖分过程中将直井、水平井、断层等各种约束分别概化为点、线、区约束,基于泰森多边形的拓扑重构,完成PEBI网格的生成。将剖分算法耦合到作者前期开发的可视化建模软件TOUGHVISUAL上,并应用于几种典型复杂情况下地质体网格剖分建模,应用结果显示了本文方法的科学实用性和操作简便性。

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