Experimental studies on the hydrodynamics, mass transfer and reaction in bubble swarms with ultrafast X-ray tomography and local probes

超快X射线断层扫描和局部探针气泡群流体动力学、传质和反应的实验研究

• 批准号: 256728712
• 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: Priority Programmes
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/256728712?language=en
• 关键词: Experimental; studies; hydrodynamics; mass; transfer

The project pursues the aim to assess essential aspects of the interplay of bubble swarm dynamics, bubble interface dynamics, mass transfer and reaction, particularly yield and selectivity, in reactive bubbly flows at high gas fractions by means of experiments with high-resolution dynamic imaging and measurement techniques. This is of particular value for the mesoscalic modelling of transport and reaction in bubbly flows. Hydrodynamics and mass transfer will be investigated with ultrafast X-ray tomography and X-ray assisted hot wire anemometry. The dynamic measurement of species concentration will be done with wire-mesh sensors and UV/Vis spectro-photometry. As reaction system we will use the reaction of Fe(II) complexes with NO and O2. Experimental studies will be designed and planned in close cooperation with the numerical groups of the priority programme.

该项目的目标是通过高分辨率动态成像和测量技术的实验，评估高气体分数下反应性泡状流中气泡群动力学、气泡界面动力学、传质和反应，特别是产率和选择性相互作用的基本方面。这是特别有价值的中尺度模拟的运输和反应泡状流。流体动力学和传质将采用超快X射线断层扫描和X射线辅助热线风速仪进行研究。将使用丝网传感器和UV/维斯分光光度法进行物种浓度的动态测量。作为反应体系，我们将使用Fe（II）配合物与NO和O2的反应。将与优先方案的数字小组密切合作，设计和规划实验研究。