Magnetic resonance velocimetry of particle hydrodynamics in a three-dimensional draft tube spout-fluid bed

This dataset augments the article: "Magnetic resonance velocimetry of particle hydrodynamics in a three-dimensional draft tube spout-fluid bed" published in Chemical Engineering Journal (https://doi.org/10.1016/j.cej.2024.149678). This dataset consist of Magnetic resonance velocimetry data of a vertical cross-section through a draft tube spout-fluid bed at various operational settings. The data is saved as a MATLAB ".mat" file (Velocity.mat). This file contains a struct that relates the velocity fields in the annular region (ann_vx and ann_vy) and the tube region (tube_vx and tube_vy) to the respective settings of the experiments. The fields of the struct are as follows Qf: Gas flow rate of the background fluidization in liters per minute at norm conditions Qs: Gas flow rate of the spout flow in liters per minute at norm conditions L: Length of the draft tube in mm Hg: Gap height of the draft tube in mm D: Diameter of the draft tube in mm Hb: Bed height of the particle bed in mm ann_vx: Horizontal velocity of the particles in the annular region in cm/s ann_vy: Vertical velocity of the particles in the annular region in cm/s tube_vx: Horizontal velocity of the particles in the tube region in cm/s tube_vy: Vertical velocity of the particles in the tube region in cm/s An accompanying example script to load and present the data as a Matlab script and a Python Script (ExampleData.m and ExampleData.py) An example simulation case of a DTSFB ("DraftTube_Hg5_ChemEngJ.zip") simulated via CFD-DEM using the CFDEMcoupling framework (https://www.cfdem.com/cfdemcoupling; https://github.com/CFDEMproject/CFDEMcoupling-PUBLIC)本数据集配套发表于《Chemical Engineering Journal》（化学工程期刊，https://doi.org/10.1016/j.cej.2024.149678）的论文《三维导流管喷动流化床内颗粒流体动力学的磁共振测速》（原文标题："Magnetic resonance velocimetry of particle hydrodynamics in a three-dimensional draft tube spout-fluid bed"）。本数据集包含不同操作工况下导流管喷动流化床垂直截面的磁共振测速数据，存储为MATLAB格式的".mat"文件（Velocity.mat）。该文件包含一个结构体，将环形区域（ann_vx与ann_vy）与导流管区域（tube_vx与tube_vy）内的速度场，与对应实验工况相关联。该结构体包含以下字段： Qf：标准工况下背景流化气体的流量，单位为升每分钟（L/min） Qs：标准工况下喷动流气体的流量，单位为升每分钟（L/min） L：导流管长度，单位为毫米（mm） Hg：导流管间隙高度，单位为毫米（mm） D：导流管直径，单位为毫米（mm） Hb：颗粒床床层高度，单位为毫米（mm） ann_vx：环形区域内颗粒的水平速度，单位为厘米每秒（cm/s） ann_vy：环形区域内颗粒的垂直速度，单位为厘米每秒（cm/s） tube_vx：导流管区域内颗粒的水平速度，单位为厘米每秒（cm/s） tube_vy：导流管区域内颗粒的垂直速度，单位为厘米每秒（cm/s） 随附了用于加载并展示该数据的MATLAB脚本与Python脚本（ExampleData.m与ExampleData.py）。此外还附带一个通过CFDEMcoupling框架（https://www.cfdem.com/cfdemcoupling; https://github.com/CFDEMproject/CFDEMcoupling-PUBLIC）采用CFD-DEM（计算流体力学-离散元法）方法模拟的DTSFB（导流管喷动流化床，DraftTube_Hg5_ChemEngJ.zip）示例模拟算例。