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

使用超快 X 射线断层扫描和基于图像的扫描控制进行多相流动态结构跟踪

• 批准号: 492989376
• 负责人: Professor Dr.-Ing. Uwe Hampel
• 金额: --
• 依托单位: Abteilung Experimentelle Thermofluiddynamik (FWDF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/492989376?language=en
• 关键词: Dynamic; structure; tracking; multiphase; flow

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.

基于这一结果，超快X射线层析成像将被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。具体来说，将进一步开发和验证用于描述密集气泡群中的破裂和合并事件的时间分辨参数的获取的控制策略、密集气泡群中的合并事件的实验研究，特别是关于借助变形状流动界面的膜排水模型进行建模的贡献、密集气泡群中的气泡破碎事件的实验研究，其中特别关注子体尺寸数目和尺寸分布，以及对现有的合并和衰变核的最新结果进行分类和扩展以用于流动模拟。为分解和合并模型的国际验证提供了基准数据集。