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首页> 外文期刊>Flow Measurement and Instrumentation >Dynamic flow behavior measurements in gas-solid fluidized beds using different non-intrusive techniques and polyethylene powder
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Dynamic flow behavior measurements in gas-solid fluidized beds using different non-intrusive techniques and polyethylene powder

机译：使用不同的非侵入性技术和聚乙烯粉末在气固流化床中进行动态流动行为测量

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Pressure fluctuations and X-ray computed tomography (CT) measurements were utilized to characterize the flow behavior of gas-solid fluidized beds using polyethylene particles in three Plexiglas columns with diameters of 10, 20, and 30 cm. Air was used as the gas phase. The gas-solid flow dynamic under ambient conditions was characterized from statistical analysis of pressure fluctuation data and CT images. The time-averaged voidage distribution, bubble-phase area fraction, bubble diameter and bubble number distribution varying with the bed heights were extracted from all the three columns. The bed scales had significant effect on the hydrodynamics. The scale-up effects on the gas-solid two-phase flow behavior were discussed.
机译：利用压力波动和X射线计算机断层扫描（CT）测量来表征气固流化床的流动行为，该流化床使用了三个直径为10、20和30 cm的Plexiglas色谱柱中的聚乙烯颗粒。空气用作气相。通过对压力波动数据和CT图像进行统计分析来表征环境条件下的气固流动动力学。从所有三列中提取时间平均空隙率分布，气泡相面积分数，气泡直径和气泡数分布随床高的变化。床秤对流体动力学有重要影响。讨论了对气固两相流动行为的放大效应。

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