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An analysis on structure of impinging and free diesel spray with exciplex fluorescence method in high temperature and pressure field

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Abstract

Because an injected spray development process consists of impinging and free spray in the diesel engine, it is needed to analyze the impinging spray and free spray, simultaneously, in order to study the diesel spray behavior. To dominate combustion characteristics in diesel engine is interaction between injected fuel and ambient gas, that is, process of mixture formation. Also it is very important to analyze liquid and vapor phases of injected fuel on the investigation of mixing process, respectively and simultaneously. Therefore, in this study, the behavior characteristics of the liquid phase and the vapor phase of diesel spray was studied by using exciplex fluorescence method in high temperature and injection pressure field. Finally, it can be confirmed that the distribution of vapor concentration is more uniform in the case of the high injection than in that of the low injection pressure.

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Abbreviations

H :

Spray Height

L :

Liquid-phase length

R :

Spray Radius

U :

Velocity

ρ :

Density of Ambient Gas

a :

Ambient gas

liq :

Fuel

liq :

Liquid Phase

vap :

Vapor Phase

w :

Wall

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Authors and Affiliations

  1. Department of Mechanical Engineering, Dong-A University, 604-714, Busan, Korea

    Jeongkuk Yeom, Jongsang Park & Sungsik Chung

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  1. Jeongkuk Yeom
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  2. Jongsang Park
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  3. Sungsik Chung
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Correspondence to Sungsik Chung.

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Yeom, J., Park, J. & Chung, S. An analysis on structure of impinging and free diesel spray with exciplex fluorescence method in high temperature and pressure field. J Mech Sci Technol 19, 2281–2288 (2005). https://doi.org/10.1007/BF02916468

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  • DOI: https://doi.org/10.1007/BF02916468

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