论文标题
使用嵌入式网格的耦合孔 - 摩德机电和断裂传播的集成数值模型
An integrated numerical model for coupled poro-hydro-mechanics and fracture propagation using embedded meshes
论文作者
论文摘要
多孔介质中流体驱动的裂缝繁殖和一般多相流的综合模型对于多种系统的研究和工程非常有价值，包括液压压裂，废物的地下处置以及在此类应用中缓解地质阵得到缓解。这项工作将\ cite {ren2018embedded}的耦合模型多相流和术形模型扩展到骨折传播（FP）。耦合的XFEM-EDFM方案使用了嵌入在静态背景网格上的单独的断裂网格。断裂传播（FP）的发作和动力学由等效应力强度因子（SIF）标准控制。应用域综合法（J积分）来计算此信息。提出了一种自适应的时间建设方案，以迅速限制和生长时间分辨率，以匹配基本的时间尺度。用分析溶液对所提出的模型进行了验证，并显示了准确和适应性地塑造流体转运和变形以及多个骨折的传播的能力。
Integrated models for fluid-driven fracture propagation and general multiphase flow in porous media are valuable to the study and engineering of several systems, including hydraulic fracturing, underground disposal of waste, and geohazard mitigation across such applications. This work extends the coupled model multiphase flow and poromechanical model of \cite{ren2018embedded} to admit fracture propagation (FP). The coupled XFEM-EDFM scheme utilizes a separate fracture mesh that is embedded on a static background mesh. The onset and dynamics of fracture propagation (FP) are governed by the equivalent stress intensity factor (SIF) criterion. A domain-integral method (J integral) is applied to compute this information. An adaptive time-marching scheme is proposed to rapidly restrict and grow temporal resolution to match the underlying time-scales. The proposed model is verified with analytical solutions, and shows the capability to accurately and adaptively co-simulate fluid transport and deformation as well as the propagation of multiple fractures.
