B214 過熱面上に液滴衝突時の固液接触状況の観察(固液相変化を伴う伝熱現象IV)

概要

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This paper reports visual observation results of liquid-solid contact situations when a water droplet impacts on a superheated surface, in order to obtain fundamental data such as diameter of liquid-contact outer region for future numerical simulations of limiting process of localized liquid-solid contact on a superheated surface. A single crystal sapphire plate was used for the superheated surface because of its transparency and relatively higher thermal conductivity. The obtained results show that liquid-solid contact is gradually restrained and limited as initial surface temperature increases; i.e. maximum liquid-solid contact diameter decreases. On the other hand, the increase of height of droplet falling promotes liquid-solid contact such that both maximum liquid-solid contact diameter and its spreading speed are increased.
一般社団法人日本機械学会の論文
2009-11-06