Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Supersonic Moist Air Flow with Condensation in a Wavy Wall Channel

  • Ahn, Hyung-Joon (Principal Researcher, Regulatory Research Division, Korea Institute of Nuclear Safety) ;
  • Kwon, Soon-Bum (Professor, School of Mechanical Engineering, Kyungpook National University)
  • Published : 2001.04.01
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Abstract

The characteristics of Prand시-Meyer expansion of supersonic flow with condensation along a wavy wall in a channel are investigated by means of experiments and numerical analyses. Experiments are carried out for the case of moist air flow in an intermittent indraft supersonic wind tunnel. The flow fields are visualized by a Schlieren system and the distributions of static pressure along the upper wavy wall are measured by a scanning valve system with pressure transducers. In numerical analyses, the distributions of streamlines, Mach lines, iso-pressure lines, and iso-mass fractions of liquid are obtained by the two-dimensional direct marching method of characteristics. The effects of stagnation temperature, absolute humidity, and attack angle of the upper wavy wall on the generation and the locations of generation and reflection of an oblique shock wave are clarified. Futhermore, it is confirmed that the wavy wall plays an important role in the generation of an oblique shock wave and that the effect of condensation on the flow fields is apparent.

Keywords

References

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