GEONEAT 2D Heterogeneous Fracture Aperture and Reynolds-Based Flow Fields Run 04

This dataset contains 100 Monte Carlo realizations of 2D steady-state Stokes flow simulations in rough-walled fractures, generated within the GEONEAT project (EU Horizon Europe GA 101111216). The simulations adopt the lubrication approximation and capture the influence of aperture heterogeneity on hydrodynamic transport. Each realization includes pressure, velocity (longitudinal and transverse), and aperture fields stored in HDF5 format. Data were generated using a synthetic aperture FFT-based generator algorithm and solved with a custom Newton-based flow solver. The dataset is organized according to the GEONEAT Data Management Plan. It is compatible with HDFView, MATLAB (`h5read`), and Python (`h5py`). Please refer to the README file for a complete description of the structure, parameter values, and licensing information. Related publication (under review):Lenci, A., et al. *Hydrodynamic Transport in Rough-Walled Fractures: A Monte Carlo Approach*. Submitted to the Journal of Fluid Mechanics.本数据集包含100组粗糙壁面裂隙内二维稳态斯托克斯流（Stokes flow）模拟的蒙特卡洛（Monte Carlo）实现，由GEONEAT项目（欧盟地平线欧洲计划（EU Horizon Europe）资助协议号GA 101111216）生成。 该模拟采用润滑近似（lubrication approximation），刻画了裂隙开度非均质性对水动力输运过程的影响。每组蒙特卡洛实现均包含压力场、速度场（含纵向与横向分量）以及开度场，所有数据以HDF5格式存储。数据集通过基于快速傅里叶变换（FFT）的合成开度生成算法构建，并使用定制化的牛顿法流动求解器完成数值求解。 本数据集遵循GEONEAT数据管理计划进行组织，可兼容HDFView、MATLAB的`h5read`函数以及Python的`h5py`库。 如需了解数据集结构、参数取值与授权信息的完整说明，请参阅README文件。 相关研究论文（审稿中）：Lenci A. 等人.《粗糙壁面裂隙内的水动力输运：蒙特卡洛方法》，已提交至《流体力学杂志（Journal of Fluid Mechanics）》。