Bubble cavitation in a microchannel

被引：79

作者：

Li, J

Cheng, P ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mech & Power Engn, Shanghai 200030, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2004年 / 47卷 / 12-13期

关键词：

bubble cavitation; microchannel; kinetics; homogeneous nucleation; heterogeneous nucleation;

D O I：

10.1016/j.ijheatmasstransfer.2003.11.020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effects of microchannel size, mass flow rate and heat flux on boiling incipience or bubble cavitation in a microchannel are studied in this paper. The well-known concept of survival of a bubble cavity is extended, and the classical kinetics of nucleation is introduced to study bubble nucleation in water flowing in a silicon microchannel. The effects of contact angle, dissolved gas, and the existence of microcavities and corners in the microchannel on bubble's nucleation/cavitation temperature are estimated. With this information, a numerical solution is carried out to study the effects of mass flow rate and heat flux on bubble nucleation/cavitation in microchannels. The results of this analysis provide further physical insight on boiling heat transfer in microchannels. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：2689 / 2698

页数：10

共 27 条

[1]

[Anonymous], 1976, TRANSPORT PROCESSES

[2]

[Anonymous], 1974, HDB CHEM PHYS

[3]

[Anonymous], 1957, T AM SOC MECH ENG

[4] BUBBLE DYNAMICS IN BOILING UNDER HIGH HEAT-FLUX PULSE HEATING [J].