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The Two-Phase Conical Swirl Atomizers: Spray Characteristics

Author

Listed:
  • Marek Ochowiak

    (Department of Chemical Engineering and Equipment, Poznan University of Technology, 60-965 Poznan, Poland)

  • Andżelika Krupińska

    (Department of Chemical Engineering and Equipment, Poznan University of Technology, 60-965 Poznan, Poland)

  • Sylwia Włodarczak

    (Department of Chemical Engineering and Equipment, Poznan University of Technology, 60-965 Poznan, Poland)

  • Magdalena Matuszak

    (Department of Chemical Engineering and Equipment, Poznan University of Technology, 60-965 Poznan, Poland)

  • Małgorzata Markowska

    (Department of Chemical Engineering and Equipment, Poznan University of Technology, 60-965 Poznan, Poland)

  • Marcin Janczarek

    (Department of Chemical Engineering and Equipment, Poznan University of Technology, 60-965 Poznan, Poland)

  • Tomasz Szulc

    (Industrial Institute of Agricultural Engineering, Łukasiewicz Research Network, 60-963 Poznan, Poland)

Abstract

This paper presents the results of experimental studies on two-phase conical swirl atomizers. The impact of various atomizer geometries and different operational parameters of the atomization process on the spray characteristics was investigated. The influence of the mixing chamber height H S to diameter D S ratio and the volumetric flow rates of liquid and gas on the discharge coefficient values, spray angle, droplet size expressed by Sauter mean diameter D 32 , volumetric and radial distributions of droplet diameters in the spray stream were determined. The analysis of results showed that the discharge coefficient values depend on the Reynolds number for liquid and gas and the atomizer geometry. The spray angle increases as the flow rate of liquid and gas increases depending on the applied atomizer construction. The Sauter mean diameter value is correlated with the geometric dimensions of the atomizer swirl chamber. The rapid increase in D 32 occurs after exceeding the value H S /D S ≈ 3. The Sauter mean diameter also depends on the operating parameters. A central area of stream is filled with smaller sized droplets as the gas flow rate increases.

Suggested Citation

  • Marek Ochowiak & Andżelika Krupińska & Sylwia Włodarczak & Magdalena Matuszak & Małgorzata Markowska & Marcin Janczarek & Tomasz Szulc, 2020. "The Two-Phase Conical Swirl Atomizers: Spray Characteristics," Energies, MDPI, vol. 13(13), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:13:p:3416-:d:379520
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    Cited by:

    1. Krystian Czernek & Marek Ochowiak & Sylwia Włodarczak, 2020. "Effect of Rheological Properties of Aqueous Solution of Na-CMC on Spray Angle for Conical Pressure-Swirl Atomizers," Energies, MDPI, vol. 13(23), pages 1-14, November.

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