CHARACTERIZATION OF THE INITIAL SPRAY FROM A JET IN CROSSFLOW

An experimental study on the initial spray from a liquid jet in air crossflow was conducted using Shadowgraphy and Particle Image Velocimetry (PIV) techniques. Momentum 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, breakup locations in terms of momentum ratio and gas Weber number were obtained using linear regression of the experimental data. Two breakup modes were recognized in the test (Column breakup and Bag breakup), a breakup mode regime map was provided including effects of momentum ratio and gas Weber number. Drop characteristics in the spray were also investigated.

Department dc:contributor.department

Fire Protection Engineering

Year dc:date.issued

2009

Author dc:creator

• Zheng, Yinghui

Advisor dc:contributor.advisor

• Marshall, André

Handle dc:identifier.uri

http://hdl.handle.net/1903/10013

OAI identifier oai:identifier

oai:drum.lib.umd.edu:1903/10013