CHARACTERIZATION OF THE INITIAL SPRAY FROM LOW-WEBER-NUMBER JETS IN CROSSFLOW

被引：24

作者：

Zheng, Yinghui ^{[1
]}

Marshall, Andre W. ^{[1
]}

机构：

[1] Univ Maryland, Dept Fire Protect Engn, College Pk, MD 20742 USA

来源：

ATOMIZATION AND SPRAYS | 2011年 / 21卷 / 07期

基金：

美国国家科学基金会;

关键词：

column trajectory; spray trajectory; breakup location; breakup mode; drop size; drop velocity; NONTURBULENT LIQUID JETS; AIR-FLOW; BAG BREAKUP; ATOMIZATION; PRESSURE; DROP;

D O I：

10.1615/AtomizSpr.2011003714

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An experimental study on the initial spray from a liquid jet in air crossflow was conducted using shadowgraphy and particle tracking velocimetry (PTV) techniques. Momentum flux ratio and gas Weber number were varied to study their effects on the column trajectory, spray trajectory, breakup locations, and spray characteristics after column breakup. Correlations for column trajectory, spray trajectory, and breakup locations in terms of momentum flux ratio and gas Weber number were obtained using linear regression of the experimental data. Two breakup mode regimes were explored in the tests (column breakup and bag breakup). Breakup mode transition from column to bag breakup was found to occur at larger gas Weber numbers than previous studies. Drop characteristics in the spray were also investigated. Drop size measurements revealed bimodal drop size distribution in column breakup mode, while bag breakup mode drop size distribution exhibited single-peak behavior. The characteristic velocity was found to increase more quickly in the column region than in the spray region.

引用

页码：575 / 589

页数：15

共 23 条

[1] Breakup and atomization of a kerosene jet in crossflow at elevated pressure [J].

Becker, J ;

Hassa, C .

ATOMIZATION AND SPRAYS, 2002, 12 (1-3) :49-67

[2] Air density effect on the atomization of liquid jets in crossflow [J].

Bellofiore, A. ;

Cavaliere, A. ;

Ragucci, R. .

COMBUSTION SCIENCE AND TECHNOLOGY, 2007, 179 (1-2) :319-342

[3] An experimental study of liquid jets interacting with cross airflows [J].

Birouk, M ;

Stäbler, T ;

Azzopardi, BJ .

PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION, 2003, 20 (01) :39-46

[4] Primary break-up of a viscous liquid jet in a cross airflow [J].

Birouk, M ;

Azzopardi, BJ ;

Stäbler, T .

PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION, 2003, 20 (04) :283-289

[5] Bending and break-up of a liquid jet in a high pressure airflow [J].

Cavaliere, A ;

Ragucci, R ;

Noviello, C .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2003, 27 (04) :449-454

[6]

Chen T H., 1993, P 31 AIAA AER SCI M, P11

[7] Temporal properties of secondary drop breakup in the bag breakup regime [J].

Chou, WH ;

Faeth, GM .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1998, 24 (06) :889-912

[8] Effects of injection angle on atomization of liquid jets in transverse airflow [J].

Fuller, RP ;

Wu, PK ;

Kirkendall, KA ;

Nejad, AS .

AIAA JOURNAL, 2000, 38 (01) :64-72

[9] Spray characteristics of liquid jet traversing subsonic airstreams [J].

Inamura, T ;

Nagai, N .

JOURNAL OF PROPULSION AND POWER, 1997, 13 (02) :250-256

[10] Trajectory of water jet exposed to low subsonic cross-flow [J].

Iyogun, C. O. ;

Birouk, M. ;

Popplewell, N. .

ATOMIZATION AND SPRAYS, 2006, 16 (08) :963-979

← 1 2 3 →