DOI: 10.6084/m9.figshare.31054858
title: A Semi-Resolved VOF-DEM Coupling Method for Bedload Transport of Non-Spherical Particles

description: This dataset contains all simulation data and processed results underlying the figures in the manuscript titled <i>"A Semi-Resolved VOF-DEM Coupling Method for Bedload Transport of Non-Spherical Particles."</i> The data are organized to ensure transparency, reproducibility, and compliance with journal data-sharing policies.<b>1. Data Organization</b>Each figure in the manuscript corresponds to a separate folder named <code>Figure_X</code>, where <i>X</i> is the figure number.Within each folder, files are prefixed with:<code><strong>sp-</strong></code> for data from simulations with <b>spherical particles</b>.<code><strong>nosp-</strong></code> for data from simulations with <b>non-spherical particles</b>.<b>2. Data Content by Figure</b>The dataset includes raw and processed data for the following figures:<b>Figure 4</b>: Settling velocity curves for spherical and non-spherical particles.<b>Figure 5</b>: Terminal settling drag coefficients for spherical particles.<b>Figure 6</b>: Terminal settling drag coefficients for non-spherical particles, including subfigures (a) and (b) based on shape factor and disk-shaped particle assumptions.<b>Figure 8</b>: Velocity profiles during the two-particle Drafting-Kissing-Tumbling (DKT) process, including comparisons between semi-resolved simulations, experimental data, and unresolved simulations.<b>Figure 10</b>: Instantaneous particle transport rates under high-concentration conditions.<b>Figure 11</b>: Validation data for bedload transport rates under high-concentration conditions.<b>Figure 12</b>: Time-averaged longitudinal velocity and Reynolds stress distributions for Case-3 conditions.<b>Figure 13</b>: Instantaneous particle transport rates under low-concentration conditions.<b>Figure 17</b>: Probability density distributions of imbrication slope angles.<b>3. Data Formats and Structure</b><b>A. Flow Field Data</b>Stored in <code>.mat</code> (MATLAB) files.Contains spatially resolved fluid field data, including coordinates (<code>x, y, z</code>) and velocity components (<code>u, v, w</code>).<b>B. Particle Data</b>Stored in <code>.txt</code> files, categorized into two types:<b>Directly Plottable Data</b>:Files containing processed data ready for generating the figures in the manuscript.<b>Comprehensive Simulation Outputs</b>:Files with detailed particle-scale information, structured as follows:Column HeaderDescription<code>#index</code>Particle identifier or time step index<code>time</code>Simulation time<code>dragForce</code>Drag force vector acting on the particle<code>Us</code>Particle velocity vector<code>Ufluid</code>Fluid velocity vector at the particle location<code>Rep</code>Particle Reynolds number<code>Cd</code>Drag coefficient<code>voidfraction</code>Local void fraction<code>运动颗粒数量</code>Number of moving particles (in Chinese, as in original output)<code>总输沙体积</code>Total sediment transport volume (in Chinese, as in original output)<code>position</code>Particle position coordinatesThe data are organized in sections separated by <code>||</code>, denoting:<code>vectorData</code>: Vector quantities (e.g., forces, velocities).<code>scalarData</code>: Scalar quantities (e.g., dimensionless numbers, counts).<code>position</code>: Particle coordinates.<b>4. Reusability and Access</b>The dataset is curated to enable:Regeneration of all figures in the manuscript.Further analysis of particle-flow interactions, bedload transport dynamics, and bed morphology evolution.Validation and benchmarking of other numerical models.Transparency in the semi-resolved CFD-DEM methodology and its outcomes.<b>5. Compliance Statement</b>This dataset fulfills the journal’s data availability requirements. It includes all essential raw and processed data supporting the findings, ensuring full reproducibility of the reported results.<b>6. Contact Information</b>For questions regarding data access, structure, or content, please contact the corresponding author:<br><b>Rangang Zhang</b><br>Email: zhangrangang2021@163.com