Investigations on Polydisperse gas phase - Dynamic

This repository contains sequences of CT images of the two-phase flow in a bubble column consisting of a DN100-PN4 PVC pipe filled with water. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 2,000 Hz. Data containers starting with “SingleBubble” contain image sequences of scans where a single bubble was injected at the bottom of the column using a magnetically operated valve which was open for the time specified in the directory name. Data containers starting with “PolydisperseDynamic” contain image sequences of scans where a background flow with 01 to 20 sl/min was induced via a needle sparger in addition to the single bubble (as described before). During each “PolydisperseDynamic” scan, the scan position was adapted to track the large bubble. The HDF5 files hold the reconstructed image data (dataset “reco”), each images scanning plane (dataset “plane”), and each images vertical scan position (dataset “scanPosition”).

本数据集仓库收录鼓泡塔内两相流的CT图像序列，该鼓泡塔主体为充水的DN100-PN4型聚氯乙烯（PVC）管。本研究采用超快电子束X射线计算机断层扫描（CT）扫描仪，以双平面扫描模式开展采集，双成像频率达2000 Hz。以"SingleBubble"为前缀的数据容器包含单气泡注入工况的扫描图像序列：该工况下通过电磁控制阀在塔底注入单个气泡，阀门开启时长由对应目录的名称指定。以"PolydisperseDynamic"为前缀的数据容器包含多分散动态工况的扫描图像序列：该工况下除前述单气泡注入流程外，还通过针式喷流器引入了流量为01至20标准升每分钟（sl/min）的背景流场。在每一次"PolydisperseDynamic"扫描过程中，扫描位置会随大型气泡的运动实时调整以实现追踪。HDF5文件存储了三类数据：重建图像数据（数据集"reco"）、各图像对应的扫描平面信息（数据集"plane"），以及各图像的垂直扫描位置信息（数据集"scanPosition"）。