610 流動層内の熱流動解析(OS5-3 環境・エネルギーと熱流体)(OS5 環境とエネルギー問題)

概要

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The purpose of this study is to elucidate the mechanism of the heat transfer promotion within the low-density-difference solid-liquid fluidized bed. The heat transfer promotion mechanism is considered due to conduction heat transfer of particles on heating surface, destruction of thermal boundary layer, and the promotion of the turbulence in the liquid phase due to the existence of the particles. In order to confirm three effects, we conducted experiments under the condition in which the particles do not contact to the heating surface. Prom the experimental results, the heat transfer has been proved to be promoted by the contact of particles at the lower region of the heating surface, and to be enhanced by the turbulence of liquid phase even if particles do not contact on the heating surface. Numerical simulation based on the discrete element method is also applied to investigate these phenomena in detail These results are now under examination.
社団法人日本機械学会の論文
2001-09-25