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2006•Journal of the Korean Society of Propulsion EngineersRequires access

Spray Characteristics of a Liquid-Liquid Swirl Coaxial Injector Part II : Effect of Recess Configuration

Dong-Jun Kim, Sung-Hyuk Kim, Poong-Gyoo Han, Youngbin Yoon

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Abstract

The influences of recess length of a liquid/liquid swirl coaxial injector on spray characteristics were investigated. It was revealed that the internal impinging phenomenon played an important role in the spray characteristics, such as spray angle and breakup length. Also, as the recess length increased, the mean drop size increased due to the increase of effective film thickness and mixing efficiency increased, but in the case of very deep recess length, the mixing efficiency decreased.

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What this paper is about

The influences of recess length of a liquid/liquid swirl coaxial injector on spray characteristics were investigated. It was revealed that the internal impinging phenomenon played an important role in the spray characteristics, such as spray angle and breakup length. Also, as the recess length increased, the mean drop size increased due to the increase of effective film thickness and mixing efficiency increased, but in the case of very deep recess length, the mixing efficiency decreased.

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Available abstract

The influences of recess length of a liquid/liquid swirl coaxial injector on spray characteristics were investigated. It was revealed that the internal impinging phenomenon played an important role in the spray characteristics, such as spray angle and breakup length. Also, as the recess length increased, the mean drop size increased due to the increase of effective film thickness and mixing efficiency increased, but in the case of very deep recess length, the mixing efficiency decreased.

Key concepts: Breakup, Injector, Coaxial, Spray characteristics, Drop (telecommunication), Materials science, Mechanics, Mixing (physics)

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