Dynamic structure tracking in multiphase flow using ultrafast X-ray tomography with image-based scan control

基于这些结果，超快X射线断层扫描将用于实时跟踪高气体含量气泡群中的单个气泡。通过这种方式，该项目有助于了解气泡群中的气泡行为，特别是气泡的合并和破裂。详细地说，进一步开发和验证用于获取时间分辨参数的控制策略，以描述密集气泡群中的破裂和合并事件，密集气泡群中合并事件的实验研究，特别是在形状可变的移动的界面的膜排水模型的帮助下对建模的贡献，将进行密集气泡群中气泡破裂事件的实验研究，特别关注子体尺寸数量和尺寸分布，以及对现有技术中的结果进行分类，并扩展现有的用于流动模拟的聚结和衰变核。提供了用于国际验证分裂和聚结模型的基准数据集。

Based on the results, ultrafast X-ray tomography will be used for real-time tracking of individual bubbles in bubble swarms with high gas content. In this way, the project contributes to the understanding of the gas bubble behaviour in bubble swarms, in particular to the coalescence and break-up of bubbles. In detail, a further development and validation of the control strategies for the acquisition of time-resolved parameters for the description of break-up and coalescence events in dense bubble swarms, the experimental investigation of coalescence events in dense bubble swarms with special regard to contributions to modelling with the aid of the film drainage model for shape-variable mobile interfaces, the experimental investigation of bubble break-up events in dense bubble swarms with special focus on the daughter size number and size distribution as well as a classification of the results in the state of the art and extension of existing coalescence and decay kernels for flow simulation will be done. Benchmark data sets for the international validation of break-up and coalescence models are provided.