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Atomization and Sprays
IF: 1.737 5-Year IF: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Print: 1044-5110
ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v3.i4.60
pages 463-475

FLOW PATTERNS IN INTERNAL-MIXING, TWIN-FLUID ATOMIZERS

J. S. Chin
Thermal Science and Propulsion Center, Purdue University, West Lafayette, Indiana 47907
Arthur H. Lefebvre
Emeritus Professor, Cranfield University, Stratford, U.K., and Purdue University, W. Lafayette, IN, USA

ABSTRACT

The flow patterns that exist in internal-mixing, twin-fluid atomizers are examined in some detail, both in the mixing chamber upstream of the final discharge orifice and in the discharge orifice itself. The study is based on the classical two-phase flow patterns that have been reported in the literature for vertically downward and horizontal pipe flows. The effects on flow patterns, and on the transitions from one flow pattern to another, of variations in liquid properties, passage dimensions, and flow conditions are examined. The implications of these results to the design and performance of practical internal-mixing, gas/liquid atomizers are discussed.


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