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Atomization and Sprays
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ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v20.i1.70
pages 85-92

A COMPARISON OF SPRAY ANGLE MEASUREMENTS USING OPTICAL AND MECHANICAL METHODS

Yudaya R. Sivathanu
En'Urga Inc.; Maurice J. Zucrow Laboratories (Formerly Thermal Sciences and Propulsion Center), School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, U.S.A.
Jongmook Lim
En'Urga Inc., 1291-A Cumberland Avenue, West Lafayette, IN 47906, USA
Bill Wallace
Engine Components, Goodrich Corporation, 811 4th Street, West Des Moines, IA 50265
Roger Seei
Engine Components, Goodrich Corporation, 811 4th Street, West Des Moines, IA 50265

SINOPSIS

A comparison of spray angle measurements obtained using optical and mechanical methods is presented. The optical method used extinction tomography at two axial locations for obtaining surface area density contours. These surface area density contours were used to define the spray angle. The method is similar to that proposed by the Society of Automotive Engineers for defining spray angles from gasoline direct injection (GDI) injectors. The mechanical method used a protractor to directly measure angles from front-illuminated sprays. Three types of fuel atomizers were used to obtain spray angles. The results obtained are analyzed to provide a consistent approach to spray angle measurements using extinction.


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