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雾化与喷雾
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ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.v3.i4.20
pages 373-387

SPRAY CHARACTERIZATION OF LIQUID/GAS COAXIAL INJECTORS WITH THE CENTER LIQUID SWIRLED

Donald J. Hautman
United Technologies Research Center, East Hartford, Connecticut 06108

ABSTRACT

Some results of an investigation to characterize sprays generated by liquid/gas coaxial injectors with the center liquid swirled are described. This injector type is similar to an air-assisted pressure swirl injector. Without gas flow it becomes a pressure swirl injector. This injector type is currently being considered/or use in a liquid oxygen/gaseous hydrogen rocket combustor. Spray characterization results were obtained from photographs, a pat-ternation system, and a phase Doppler particle analyzer (PDPA).
The results of this investigation are summarized below:

  • Spray angle increased with increasing liquid mass flow rate and decreasing gas mass flow rate.
  • A symmetric hollow-cone spray was produced.
  • Spray structure was similar to the spray structure of a pressure swirl injector.


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