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雾化与喷雾
影响因子: 1.737 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.v6.i2.20
pages 145-166

ANATOMY OF AN ISOTHERMAL AND A BURNING HOLLOW-CONE SPRAY

B. Chehroudi
Department of Mechanical Engineering, University of Illinois at Chicago, Chicago, Illinois, USA
M. Ghaffarpour
Department of Mechanical Engineering, University of Illinois at Chicago, Chicago, Illinois, USA

ABSTRACT

To investigate the characteristics and anatomy of a hollow-cone spray, with and without combustion, somewhat similar to what occurs in the primary zone of a gas turbine combustion chamber or within a furnace or oil burner, a swirl-stabilized combustor and a water-cooled stainless-steel gas sampling probe were designed. A kerosene spray was generated by a simplex atomizer with a nominal included cone angle of 30°. Swirling air with a calculated nominal swirl number of 0.36 was produced with a swirl plate having an exit air velocity vector of 30° with respect to the chamber axis. A laser Doppler velocimeter was used to measure the axial gas velocities and investigate the flow field in the combustor without fuel injection. A phase Doppler particle analyzer was employed to measure the drop size and mean values of the axial drop velocity with and without combustion. Air and fuel flow rates and other conditions were kept identical for reacting and nonreacting cases to see effects of combustion alone on the spray. Finally, a gas chromatograph was employed to measure the gaseous species concentrations such as hydrogen, oxygen, nitrogen, carbon monoxide, methane, and carbon dioxide in this combustor.


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