加熱面に衝突する液滴の非定常熱伝達 : 第2報,加熱面温度変動に基づいた固液接触過程の検討

概要

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The heat transfar of a drop impinging on a heated surface is influenced considerably by liquid-solid contact and the accompanying formation of a vapor film. The aim of this study was to grasp the liquid-solid contact state more quantitatively by informations based on the temperature fluctuation of the heated surface during the impingement and the behavior of the drop on the heated surface. Experiments were conducted using two different drop diameters (2.3 and 4.0 mm), drop subcooling of 88 K, impinging Weber numbers of 12-98, and an initial temperature for the heated surface of 160-420℃. The unique miniaturization behavior of the drop was illustrated schematically by the imageprocessing method. The existence of four drop-boiling heat-transfer modes which clearly could be classified according to the initial temperatureof the heated surface was proved.
一般社団法人日本機械学会の論文
1989-11-25