E214 2次元流動層内における個々の粒子の運動と温度の同時計測(OS9 熱・流動(計測・試験))

概要

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Fluidized beds are widely used in industrial processes concerned with heat transfer such as combustion. In recent years, numerical simulation models that predict the heat transfer phenomena in fluidized bed are developed. The heat transfer in fluidized beds is conducted by several mechanisms and its behavior is extremely complex. In order to improve these numerical models, it is important to know the relation between the convective and diffusive motion of particles and heat transfers in the particle-level. In the present study, a measurement technique based on the coupling between particle tracking velocimetry (PTV) and infrared thermography (IT) measurements is proposed. We apply the technique to a two-dimensional gas-fluidized bed under a spouting condition and the motion and the temperature of individual particles largely-influenced by the bubble occurrences are clearly observed. The relations between convective and diffusive behaviors of individual particles and heat transfer in the bed are studied in detail.
一般社団法人日本機械学会の論文
2011-06-22