Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Flow Characteristics of Double-Venturi Abrasive Blasting Nozzle

더블벤츄리 연마노즐의 유동특성에 관한 연구

  • Jung, Seung Wan (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Park, Sang Hoon (Department of Aerospace and Mechanical Engineering, Graduate School, Korea Aerospace University) ;
  • Song, Myung Jun (Department of Aerospace and Mechanical Engineering, Graduate School, Korea Aerospace University) ;
  • Lee, Yeol (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 정승완 (한국항공대학교 항공우주 및 기계공학부) ;
  • 박상훈 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 송명준 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 이열 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2017.09.01
  • Accepted : 2017.11.23
  • Published : 2018.04.30
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Abstract

In the present work, a numerical study is carried out to observe the characteristics of the flow and particle behaviors in a supersonic double Venturi abrasive blasting nozzle. Schlieren flow visualization and Pitot pressure at the nozzle downstream are also carried out, and those measurement results are compared to the numerical ones for code validation. Open and closed secondary holes on the double Venturi nozzle surface are tested for various nozzle pressures, and the results are compared with the ones observed for other similar supersonic Laval nozzles.

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References

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