A small single drop of molten LiNO_3 and molten tin is dropped into a tapped ethanol and ethanol solution respectively, and the phenomena generated after the collapse of stable film boiling around the drop are investigated in order to study the vapor explosion mechanism. The observation study of explosion configuration using a high speed camera and flash light shows that the surface of the vapor bubble is very uneven, and the change of the configuration has a close connection with the pressure change induced around the drop. The curves of pressure change are roughly divided into four types. When the maximum pressure is relatively high, a characteristic curve which has three groups of pressure peaks is detected. The first peak is supposed to be connected with the collapse of vapor film, the second with the fragmentation of hot liquid and the third, which is usually the maximum, with the recontact to volatile liquid. The peak values are related to the time interval between the second an the third peak.
雑誌名
日本機械学會論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B
巻
52
号
476
ページ
1777 - 1783
発行年
1986-04-25
ISSN
03875016
書誌レコードID
AN00187441
フォーマット
application/pdf
著者版フラグ
publisher
その他のタイトル
Study of Vapor Explosion Mechanism with Single Drops of High Temperature Liquids and Volatile Liquids : 1st Report, Experiments with a Single Drop
高温液小滴と低沸点液による蒸気爆発の機構に関する研究 : 第1報,単一滴による実験
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