A first streamline-based simulation method within the projection-based embedded discrete fracture model (pEDFM)

IF 5.3 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2025-05-23 DOI:10.1016/j.compgeo.2025.107357

Xiang Rao , Shuqing Guo , Xupeng He , Hyung Kwak , Hussein Hoteit

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引用次数: 0

Abstract

This work presents the first streamline (SL) simulation method within the framework of a projection-based embedded discrete fracture model (pEDFM). The implemented pEDFM is formulated by combining two-point flux approximation (TPFA) and mimetic finite difference (MFD) schemes. We refer to the proposed numerical framework as SL-based pEDFM using hybrid TPFA-MFD scheme. It is operated in an IMPES manner. Specifically, the hybrid TPFA-MFD scheme is adopted to implicitly solve the pressure equation. The SL tracking workflow within the pEDFM framework is developed and applied to solve the transport equation in parallel along each streamline. We benchmark the proposed method with other existing streamline- or finite-volume-based approaches on various numerical examples. The results show that the proposed method exhibits broader general applicability compared to the SL-based EDFM, higher accuracy and efficiency than the TPFA-based pEDFM, and greater flexibility in mesh generation than the DFM-based approaches. The advantages underscore the great potential of the proposed method to be implemented in field-scale diagnostics and simulations.

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基于投影的嵌入式离散裂缝模型（pEDFM）中首个基于流线的模拟方法

这项工作提出了基于投影的嵌入式离散裂缝模型（pEDFM）框架内的第一个流线（SL）模拟方法。所实现的pEDFM是由两点通量近似（TPFA）和模拟有限差分（MFD）格式相结合而形成的。我们将提出的数值框架称为使用混合TPFA-MFD方案的基于sl的pEDFM。它以IMPES方式运行。具体而言，采用TPFA-MFD混合格式隐式求解压力方程。开发了pEDFM框架下的SL跟踪工作流，并将其应用于求解各流线的并行传输方程。我们将所提出的方法与其他现有的基于流线或有限体积的方法在各种数值实例上进行了比较。结果表明，该方法比基于sl的EDFM具有更广泛的适用性，比基于tpfa的pEDFM具有更高的精度和效率，在网格生成方面比基于dfm的方法具有更大的灵活性。这些优点强调了该方法在现场规模诊断和模拟中实现的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.