Contributions of 3D Printed Fracture Networks to Development of Flow and Transport Models
Contributions of 3D Printed Fracture Networks to Development of Flow and Transport Models
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DOI：
10.1007/s11242-018-1154-7
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发表时间：
2018-09
影响因子：
2.7
通讯作者：
A. Suzuki;J. Minto;N. Watanabe;Kewen Li;R. Horne
中科院分区：
文献类型：
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作者：
A. Suzuki;J. Minto;N. Watanabe;Kewen Li;R. Horne
利用天然岩石样品进行的常规实验在观察岩石结构和控制裂缝性质方面存在困难。利用3D打印技术，利用3D打印机制作了一个复杂的裂缝网络。这种方法使我们能够控制裂缝网络的性质，并为模拟和实验准备相同的几何形状。通过流动实验得到了示踪剂响应曲线，并与数值模拟结果进行了比较。基于Navier-Stokes方程的计算流体力学（CFD）模拟结果与实验结果吻合较好，表明实验结果和CFD模拟结果是可靠的。另一方面，与基于三次定律的等效渗透率模型进行了比较，结果与实验结果存在较大差异。这种验证方法使我们能够讨论流模型的局限性。由于3D打印裂缝网络可以减少数值模拟和实验室实验之间的不确定性，它们将有助于理解裂缝网络中更详细和更复杂的现象。
Conventional experiments using natural rock samples have trouble in observing rock structures and controlling fracture properties. Taking advantage of 3D printing technologies, a complex fracture network was made by using a 3D printer. This approach allowed us to control the properties of the fracture networks and to prepare identical geometries for both simulation and experiment. A tracer response curve from the flow experiment was obtained and compared with numerical simulations. The result of the computational fluid dynamics (CFD) simulation based on the Navier–Stokes equations was in good agreement with experimental result, which suggested that the results of experiment and the CFD simulation are reliable. On the other hand, comparison with an equivalent permeability model based on the cubic law showed a discrepancy from the experimental result. This validation approach enabled discussion of the limitation of the flow model. Because 3D printed fracture networks could reduce uncertainty between numerical simulation and laboratory experiment, they will be useful for understanding more detailed and more complicated phenomena in fracture networks.