Experimental data of the PhD thesis "Towards Tomography-Controlled Multiphase Flows. A Study Of The Dynamics And Real-Time Control In Gas-Liquid Axial Cyclone Separators"

The thesis related to this dataset investigates, for the first time, the tomography-based real-time control of multiphase flows. A gas-liquid axial cyclone separator is used in the experiments, that combine (i) the development of fast tomography algorithms for real-time control applications, (ii) the physics of swirling gas-liquid flows, (iii) the phase distribution dynamics in the axial cyclone, and (iv) the tomography-based real-time control of the phase distribution near the cyclone outlets. This dataset contains experimental data related to: (i) the real-time Electrical Resistance Tomography (ERT) image reconstruction algorithm proposed in the current research to measure cyclone flows in the columnar regime, resulting in phase distribution reconstructions more precise and up to three orders of magnitude faster than traditional ERT algorithms ( Chapter 2 of the thesis); (ii) flow pattern maps of the vertical upward swirling gas-liquid pipe-flow patterns that can be created in axial cyclones for a wide range of gas and liquid flow rates and different swirl intensities, presented and modelled in Chapter 3; (iii) time-average efficiency and time-average phase distribution near the cyclone outlets, used to investigate if the separation can be described as a one variable function of the time-average gas core diameter in Chapter 4; (iv) measurements of the gas core in different locations of the axial cyclone, used to study the relation between the phase distribution dynamics in the axial cyclone and in the upstream flow, and the gas core response to actions in the control valve in the cyclone outlet. The phase distribution response to the valve is used to design a real-time controller to suppress external disturbances in the phase distribution, and the obtained results are also included in the dataset (Chapter 5). The experiments were performed using cameras and ERT to record the phase distribution, and the processed results presented in the thesis are uploaded in the excel tables of the current dataset.

本数据集关联的学术论文首次针对基于层析成像技术的多相流实时控制开展研究。实验采用气液轴向旋风分离器，相关研究涵盖四大方向：(i) 面向实时控制应用的快速层析成像算法开发；(ii) 旋流气液流动的物理特性；(iii) 轴向旋风分离器内的相分布动力学；(iv) 旋风分离器出口附近相分布的基于层析成像的实时控制。本数据集包含如下相关实验数据：(i) 本研究提出的、用于测量柱状流态下旋风流动的实时电阻层析成像（Electrical Resistance Tomography, ERT）图像重建算法相关数据，该算法相较传统ERT算法，相分布重建精度更优且运算速度最高提升三个数量级，对应论文第2章内容；(ii) 可在轴向旋风分离器中生成的垂直向上旋流气液管流流型图相关数据，该流型图覆盖宽泛的气液流量范围与不同旋流强度，已于论文第3章中完成展示与建模；(iii) 旋风分离器出口附近的时均分离效率与时均相分布相关数据，用于探究分离性能是否可由时均气芯直径这一单一变量进行描述，对应论文第4章内容；(iv) 轴向旋风分离器不同位置处的气芯测量数据，用于研究轴向旋风分离器内与上游流动中的相分布动力学之间的关联，以及气芯对旋风分离器出口处控制阀动作的响应特性。针对阀控动作的相分布响应数据被用于设计实时控制器以抑制相分布中的外部扰动，相关研究成果亦收录于本数据集，对应论文第5章内容。本实验通过相机与ERT设备记录相分布，论文中呈现的经处理后的结果已上传至本数据集的Excel表格中。