Experimental Investigations of Annular Liquid Curtains

[+] Author and Article Information
K. D. Kihm

Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843

N. A. Chigier

Mechanical Engineering Department, Carnegie-Mellon University, Pittsburgh, PA 15213

J. Fluids Eng 112(1), 61-66 (Mar 01, 1990) (6 pages) doi:10.1115/1.2909370 History: Received August 23, 1988; Online May 23, 2008


Experiments have been performed to study the dynamics of vertical annular liquid curtains. Using a high and a low speed photographic recording technique, different modes of curtain formation have been visualized: (a) nonpressurized curtain, (b) pressurized steady curtain, (c) pressurized oscillating curtain, and (d) punctured curtain. The velocity of the liquid was measured by an argon-ion laser Doppler velocimeter, and results were compared with free falling motion. The convergence length of the curtain was measured as a function of the pressure differential for different Froude and Weber numbers, and for different nozzle gap widths. The experimental data agree well with existing theoretical predictions for steady curtains. For harmonically oscillating curtains, the average values of minimum and maximum convergence lengths show fairly good agreement with the theory.

Copyright © 1990 by The American Society of Mechanical Engineers
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