• Title/Summary/Keyword: 수력점프

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Characteristics of Flow Field around Baffle Located Sudden Expansion and Contraction Open Channel using PIV Measurements (PIV실험을 통한 급확대 축소 개방채널에 설치된 배플 주위의 유동장특성)

  • Lee, Cheol-Jae
    • Journal of Advanced Marine Engineering and Technology
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    • v.35 no.4
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    • pp.468-474
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    • 2011
  • The flow field around baffle located sudden expansion and contraction channel was measured by PIV method and the effect according to height change of baffle built in the flow field was evaluated. The inlet flow velocity and the baffle height influence mutually to the size and flow pattern of the recycle flow of the back of the baffle and the size of the area of the water power jump passing the upper part of the baffle. In case of Reynolds number $Re=4{\times}10^3$, the critical value of baffle height is estimated around h/H=1.6 and there was a decreasing tendency as the inlet flow velocity was increased.