Characterization of stable and transient cavitation bubbles in a milliflow reactor using a multibubble sonoluminescence quenching technique

被引：53

作者：

Gielen, B. ^{[1
,2
]}

Jordens, J. ^{[1
,2
]}

Janssen, J. ^{[1
]}

Pfeiffer, H. ^{[3
]}

Wevers, M. ^{[3
]}

Thomassen, L. C. J. ^{[1
,2
]}

Braeken, L. ^{[1
,2
]}

Van Gerven, T. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Chem Engn, B-3001 Leuven, Belgium

[2] Katholieke Univ Leuven, Fac Ind Engn, Lab4U, B-3590 Diepenbeek, Belgium

[3] Katholieke Univ Leuven, Dept Mat Engn, B-3001 Leuven, Belgium

来源：

ULTRASONICS SONOCHEMISTRY | 2015年 / 25卷

关键词：

Ultrasonic millireactor; Cavitation type determination; Sonoluminescence; Flow; AQUEOUS-SOLUTIONS; ACOUSTIC CAVITATION; ULTRASONIC REACTOR; PULSED ULTRASOUND; FLUID-FLOW; WATER; FREQUENCY; DEGRADATION; POWER; COALESCENCE;

D O I：

10.1016/j.ultsonch.2014.08.013

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The bubble type, generated by an ultrasonic field, was studied in a batch and flow reactor using a multi-bubble sonoluminescence (MBSL) quenching technique with propanol and acetone. The influence of frequency and transducer configuration was evaluated using the same piezoelectric element in both setups. Results show that the bubble type not only depends on the frequency, but also on the input power or transducer configuration. Additionally, the effect of flow on sonoluminescence yield and bubble type was studied in the continuous setup at various frequencies. As the flow becomes turbulent, the sonoluminescence signal reaches a plateau for three out of four frequencies, and a transition from transient to stable cavitation occurs for frequencies below 200 kHz. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：31 / 39

页数：9

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