21001 MEMSセンサを用いた核沸騰熱伝達機構の研究 : 孤立気泡下のミクロ液膜厚さの評価(OS10 マイクロ・ナノ熱流体工学(1),オーガナイズドセッション)

概要

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The objective of this study is to investigate heat transfer mechanism of nucleate boiling with MEMS (Micro-Electro-Mechanical systems) sensor fabricated for boiling research. In the experiment Temperature variation beneath an isolated bubble under nucleate boiling condition of saturated water was measured with the sensor. Measured temperature data presents microlayer evaporation and expansion of dry-out area in bubble growth process and rewetting of the dry-out area in bubble departure process. Additionally, heat transfer from the heated surface was evaluated by calculating local heat flux by transient heat conduction analysis with the measurement data as a boundary condition. Spatial distribution of initial microlayer thickness was also computed with the derived local heat flux.
一般社団法人日本機械学会の論文
2010-03-09