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

在此基础上，超快x射线断层扫描将用于实时跟踪高含气量气泡群中的单个气泡。通过这种方式，该项目有助于理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，进一步开发和验证了用于描述密集气泡群中破裂和聚并事件的时间分辨参数获取的控制策略，对密集气泡群中聚并事件的实验研究，特别是对形状可变移动界面的膜排水模型建模的贡献；本文将对密集气泡群中气泡破碎事件进行实验研究，重点关注子粒数和子粒分布，并对流动模拟中现有聚并和衰变核的结果进行分类和扩展。基准数据集的分裂和合并模型的国际验证提供。

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.