• 제목/요약/키워드: Sudden Expanding Pipe

검색결과 1건 처리시간 0.014초

축대칭 급확대관으로 분사되는 난류분사류의 초기유동 특성 (Initial Flow Characteristics of the Turbulent Circular Jet Discharging into the Sudden Expansion Pipe)

  • 김동식;한용운
    • 대한기계학회논문집
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    • 제18권12호
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    • pp.3335-3344
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    • 1994
  • The initial flow characteristics of the turbulent circular jet discharging into the sudden expansion pipes have been investigated by the hot wire anemometry. Evolutions of similarity, centerline behavior, jet boundary and typical turbulent quantities were looked into for the expansion ratios. The results show that the spreading rates of discharging jet seem not to be dependent of the expansion ratio and that the velocity profiles in the radial directions exhibit the similarity in the regions, 2-5d, 2-6d and 3-8d for the corresponding expansion rations of 2, 3 and 5, respectively. With the increase of expansion ratio the centerline velocity decays rather slowly. The anisotropic behaviors of the discharging jets into the sudden expansion pipe look stronger than those of the free jet.