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Interaction of Annular Air Jet with a Non‐Evaporating Liquid Spray
Author(s) -
Friedman Jacob A.,
Renksizbulut Metin
Publication year - 1994
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19940110607
Subject(s) - mass flux , mechanics , jet (fluid) , flux (metallurgy) , materials science , spray characteristics , isothermal process , flow visualization , drop (telecommunication) , volume (thermodynamics) , flow (mathematics) , optics , spray nozzle , thermodynamics , physics , telecommunications , computer science , nozzle , metallurgy
The effects of a concentric annular air jet on the structure of a liquid spray have been examined under isothermal conditions using Phase Doppler interferometry, and flow visualization techniques. Local measurements of drop size, velocity, volume flux, and number density have been made simultaneously and non‐intrusively. The results show that the initial spray cone widens substantially with increasing air flow while the overall spray envelope remains essentially the same. The air jet creates a narrow high mass flux region of small droplets in the core of the spray, surrounded by a nearly uniform flux region extending almost to the boundary of the spray. Line averaged mean diameters are found to be slightly smaller, indicating that the annular air jet plays a role improving the atomization process as well.