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The Effect of Cross-flow on Liquid Atomization  

Kim, Jong-Hyun (Mechanical & Automotive Engineering, Kyungwon University)
Cho, Woo-Jin (Graduate School, Korea Aerospace University)
Lee, In-Chul (Graduate School, Korea Aerospace University)
Lee, Bong-Soo (Graduate School, Korea Aerospace University)
Koo, Ja-Ye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.2, 2008 , pp. 87-92 More about this Journal
Abstract
The breakup processes and spray plume characteristics of liquid jets injected in subsonic air cross-flows were experimentally studied. The behaviors of column, penetration, breakup of plain liquid jet and droplet sizes, velocities have been studied in non-swirling cross-flow of air. Nozzle has a 1.0 mm diameter and Lid ratio=5. Experimental results indicate that the breakup point is delayed by increasing air momentum, the penetration decreases by increasing Weber number and the split angle is increased by increasing air velocity or decreasing injection velocity. SMD increases according as increasing height or decreases in accordance with increasing air velocity. This phenomenon is related to the momentum exchange between column waves and cross-flow stream. Droplet vector velocities were varied from 11.5 to 33 m/s. A higher-velocity region can be identified in down edge region at Z/d=40, 70 and 100. Lower-velocity region were observed on bottom position of the spray plume.
Keywords
Breakup point; Cross-flow; Penetration length; SMD; Split angle;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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