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An empirical correlation between spray dispersion and spray tip penetration from an edge detection of visualized images under the flow condition of a solid body rotating swirl

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Abstract

In this study, spray tip penetration and dispersion in high-pressure environment were simulated experimentally with an emphasis on the swirl effect. A rotating constant volume chamber was designed in order to generate a swirl that could be varied continuously with a flow field that closely resembled the solid-body rotation. An emulsified fuel was injected into the chamber and the developing process of fuel spray was observed. The effect of swirl on the spray dispersion was analyzed by measuring the dispersion area as a function of the spray tip penetration and the time after the start of the injection. The effect of swirl on the spray dispersion was quantified through getting a relationship between the swirl and the dispersion. The experimental results of the spray dispersion with time after the fuel injection process began showed similar characteristics to those of the spray tip penetration with time after the start of the fuel injection. The spray dispersion characteristics while varying the spray tip penetration were also investigated. The results showed that the spray dispersion depends linearly on the spray tip penetration, when it is small. As the spray tip penetrates into longer distance, the dispersion depends on the spray tip penetration to the power of 1.6.

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Authors and Affiliations

  1. Department of Automotive Engineering, Seoul National University of Technology, 139-743, Seoul, Korea

    Lee C. H.

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  1. Lee C. H.
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Correspondence to Lee C. H..

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Lee, Choong-Hoon: He received his BS (1985), MS (1987), and PhD. degrees (1996) in Mechanical Engineering from Seoul National University. He worked as a diesel engine development engineer for Daewoo Heavy Industry for six years. He was a visiting research fellow at the Engine Research Center at the University of Wisconsin-Madison in 1997. He has worked in the Department of Automotive Engineering at Seoul National University of Technology as a professor since 2000. His research interests are the measurement and control of sprays and flows.

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Lee, C.H. An empirical correlation between spray dispersion and spray tip penetration from an edge detection of visualized images under the flow condition of a solid body rotating swirl. J Vis 11, 55–62 (2008). https://doi.org/10.1007/BF03181914

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  • DOI: https://doi.org/10.1007/BF03181914

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