Jet Interaction in Liquid-Liquid Coaxial Injectors

[+] Author and Article Information
D. Sivakumar, B. N. Raghunandan

Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012 India

J. Fluids Eng 118(2), 329-334 (Jun 01, 1996) (6 pages) doi:10.1115/1.2817381 History: Received December 12, 1994; Revised January 15, 1996; Online December 04, 2007


Interaction between two conical sheets of liquid formed by a coaxial swirl injector has been studied using water in the annular orifice and potassium permanganate solution in the inner orifice. Experiments using photographic techniques have been conducted to study the influence of the inner jet on outer conical sheet spray characteristics such as spray cone angle and break-up length. The core spray has a strong influence on the outer sheet when the pressure drop in the latter is low. This is attributed to the pressure variations caused by ejector effects. This paper also discusses the merging and separation behavior of the liquid sheets which exhibits hysteresis effect while injector pressure drop is varied.

Copyright © 1996 by The American Society of Mechanical Engineers
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