Flow patterns in synthetic fractures under varying matrix permeability for "On the influence of matrix flow in the hydraulic permeability of rough-walled fractures"

This set contains the fluid flow simulation data (pressure, pressure gradient, and velocity distributions) used in the paper "On the influence of matrix flow in the hydraulic permeability of rough-walled fractures".Ferreira, C. A. S., Nick, H. M., 2024. On the influence of matrix flow in the hydraulic permeability of rough-walled fractures. Journal of Hydrology. https://doi.org/10.1016/j.jhydrol.2024.132192The aperture data for the fractures was generated through fractional Brownian motion by combining multiple steps of simplex noise. For that purpose, we used the Python library noise (https://github.com/caseman/noise). The fluid flow simulations were carried out with the academic, multi-institutional numerical framework CSMP++ (https://www.geoenergynumerics.com/software/open-csmp), developed in C++.The mesh files in this dataset are in VTK format and may be read using the Python library meshio (https://github.com/nschloe/meshio). For each sample, namely F1-F8, each contact area value (between 0.00 and 0.40), and each matrix permeability index (between 0 and 14), there are 7 VTK files. These are as follows:sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_aperture.vtk: these files contain the aperture distribution, that is, the opening of the fractures, for each sample and each contact area value. The aperture values are stored in the center of the mesh cells and are constant for each cell. The values in these files are only for the triangle elements (fracture elements).sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_fluid-pressure-{#n}-{#mp}.vtk: these files contain the pressure distribution for problem number #n (1 or 2), for matrix perm. index #mp, for each sample and each contact area value. The pressure values are stored in the nodes of the mesh. The values in these files are only for the triangle elements (fracture elements).sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_fluid-pressure-gradient-{#n}-{#mp}.vtk: these files contain the pressure gradient distribution for problem number #n (1 or 2), for matrix perm. index #mp, for each sample and each contact area value. The pressure gradient values are derived from the nodal pressure values. Like aperture, they are stored in the center of the mesh cells and are constant for each cell. The values in these files are only for the triangle elements (fracture elements).sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_velocity-{#n}-{#mp}.vtk: these files contain the fluid velocity for problem number #n (1 or 2), for matrix perm. index #mp, for each sample and each contact area value. The velocity values are derived from the pressure gradient and the aperture values using the cubic law: velocity = (aperture^2/12*viscosity)*pressure_gradient. Like the aperture and pressure gradient, the velocity values are stored in the center of the mesh cells and are constant for each cell. The values in these files are only for the triangle elements (fracture elements).If you use this dataset in your work, include this citation:Ferreira, C. A. S., Nick, H. M., 2024. On the influence of matrix flow in the hydraulic permeability of rough-walled fractures. Journal of Hydrology. https://doi.org/10.1016/j.jhydrol.2024.132192Ferreira, C. A. S., Nick, H. M., 2024. Flow patterns in synthetic fractures under varying matrix permeability for "On the influence of matrix flow in the hydraulic permeability of rough-walled fractures". DTU Data. https://doi.org/10.11583/DTU.25055036

本数据集汇聚了流体流动模拟数据（压力、压力梯度和速度分布），这些数据应用于论文《论粗糙壁裂缝中基质流对水力渗透率的影响》中。Ferreira, C. A. S., Nick, H. M., 2024. 论粗糙壁裂缝中基质流对水力渗透率的影响. 水文学报. https://doi.org/10.1016/j.jhydrol.2024.132192。裂缝的开度数据通过组合多个单形噪声步骤的分数布朗运动生成。为此，我们采用了Python库noise（https://github.com/caseman/noise）。流体流动模拟是在由C++开发的学术多机构数值框架CSMP++（https://www.geoenergynumerics.com/software/open-csmp）上进行的。该数据集中的网格文件采用VTK格式，并可通过Python库meshio（https://github.com/nschloe/meshio）读取。对于每个样本（F1-F8），每个接触面积值（介于0.00至0.40之间），以及每个基质渗透率指数（介于0至14之间），均包含7个VTK文件。具体如下：
sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_aperture.vtk：这些文件包含每个样本和每个接触面积值的开度分布，即裂缝的开口。开度值存储在网格单元的中心，对每个单元来说是恒定的。这些文件中的值仅针对三角形元素（裂缝元素）。
sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_fluid-pressure-{#n}-{#mp}.vtk：这些文件包含针对问题编号#n（1或2）、基质渗透率指数#mp、每个样本和每个接触面积值的压力分布。压力值存储在网格的节点上。这些文件中的值仅针对三角形元素（裂缝元素）。
sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_fluid-pressure-gradient-{#n}-{#mp}.vtk：这些文件包含针对问题编号#n（1或2）、基质渗透率指数#mp、每个样本和每个接触面积值的压力梯度分布。压力梯度值由节点压力值推导而来。与开度类似，它们存储在网格单元的中心，对每个单元来说是恒定的。这些文件中的值仅针对三角形元素（裂缝元素）。
sample-{sample_name}_JRC-{JRC_value}_CA-{contact_area_value}_velocity-{#n}-{#mp}.vtk：这些文件包含针对问题编号#n（1或2）、基质渗透率指数#mp、每个样本和每个接触面积值的流体速度。速度值由压力梯度和开度值使用立方定律推导而来：速度 = (开度^2 / 12 * 粘度) * 压力梯度。与开度和压力梯度类似，速度值也存储在网格单元的中心，对每个单元来说是恒定的。这些文件中的值仅针对三角形元素（裂缝元素）。若您在您的作品中使用了此数据集，请包含以下引用：Ferreira, C. A. S., Nick, H. M., 2024. 论粗糙壁裂缝中基质流对水力渗透率的影响. 水文学报. https://doi.org/10.1016/j.jhydrol.2024.132192。Ferreira, C. A. S., Nick, H. M., 2024. 变化基质渗透率下合成裂缝的流动模式，为《论粗糙壁裂缝中基质流对水力渗透率的影响》. DTU Data. https://doi.org/10.11583/DTU.25055036