Freezing phenomena of supercooled water under impacts of ultrasonic waves

被引：52

作者：

Hozumi, T ^{[1
]}

Saito, A ^{[1
]}

Okawa, S ^{[1
]}

Matsui, T ^{[1
]}

机构：

[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Engn Sci & Mech, Meguro Ku, Tokyo 1528552, Japan

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2002年 / 25卷 / 07期

基金：

日本学术振兴会;

关键词：

phase change; water; supercooling; ultrasonic wave; ice;

D O I：

10.1016/S0140-7007(01)00104-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In order to clarify effects of ultrasonic waves on supercoold water, ultrasonic waves were applied to supercooled water. Frequency of the ultrasonic waves applied was 45 kHz, and the intensities of the waves were 0.13 and 0.28 W cm(-2), respectively. Four cases of experimental conditions were selected; a case of a free surface, a case of an oil-water surface, a case of a free surface with a dipped metal bar and a case of an oil water surface with a dipped metal bar. For each experimental condition, water was cooled at a constant cooling rate and the ultrasonic wave was applied from underneath until the water in a test tube solidified. It was found that in the case of 0.28 W cm(-2), the ultrasonic wave had distinct effects on freezing of supercooled water for all experimental conditions. On the other hand, in the case of 0.13 W cm(-2), the ultrasonic wave had an effect on freezing of supercooled water only under existence of a free surface and a metal bar. (C) 2002 Elsevier Science Ltd and IIR. All rights reserved.

引用

页码：948 / 953

页数：6