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국내 최대 기계 및 로봇 연구정보
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  • 국내학술대회

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    국내학술대회 제목 게시판 내용
    제목(국문) 동축제트의 와류주파수 및 혼합특성에 대한 수치해석 연구
    제목(영문) NUMERICAL STUDY ON THE CHARACTERISTICS OF VORTEX FREQUENCY AND LAMINAR MIXING OF A PASSIVE SCALAR IN COAXIAL JET FLOWS
    저자 김원현 (Won Hyun Kim ,경북대학교 ) ▷공저자네트워크등록하기
    박태선 (Tae Seon Park ,경북대학교 ) ▷공저자네트워크등록하기
    초록 This study focuses on the near-field vortical structure and dynamics of coaxial jets. The characteristics of laminar flow and mixing in coaxial jets are investigated using a unsteady flow simulation. In order to analyze the geometic effects on the vortical structure, several cases of different configurations are selected for various values of the velocity ratio of inner jet to outer jet. From the result, it is confirmed that mixing is promoted by the development of vortical structure and the interaction between inner jet and outer jet. This feature is strongly related to the vortex frequency in the shear-layers. The vortex frequency depends on the velocity ratio and the lip thickness of inner nozzle, but the outer pipe length has no effect on the frequency variation.
    keyword 동축제트(Coaxial-Jets), 혼합영역(Mixing Region), 평균 속도비(Mean-Velocity Ratio), 와류구조(Vortex Structure), 와류주파수(Vortex frequency)
    저널명 한국전산유체공학회 추계학술대회 ▷관련저널보기
    VOL 7
    PAGE 21-26
    발표년도 2007
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