상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제27권2호
  • /
  • Pages.177-184
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  • 2013
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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원뿔형 벤츄리수로의 수리특성

Hydraulic Characteristics in the Movable Venturi Flume with Circular Cone

  • 김대근 (목포대학교 공과대학 토목공학과)
  • 투고 : 2012.03.13
  • 심사 : 2013.04.01
  • 발행 : 2013.04.15
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초록

This study analyzed the hydraulic characteristics of a venturi flume with a circular cone using a 3-D numerical model which uses RANS(Reynolds-Averaged Navier-Stokes Equation) as the governing equation. The venturi flume with the circular cone efficiently measures the discharge in the low-flow to high-flow range and offers the advantage of accurate discharge measurements in the case of a low flow. With no influence of the tail-water depth, the stage-discharge relationship and the flow behaviors were analyzed to verify the numerical simulation results. Additionally, this study reviewed the effect of the tail-water depth on the flow. The stage-discharge relationship resulting from a numerical simulation in the absence of an effect by the tail-water depth showed a maximum margin of error of 4 % in comparison to the result of a hydraulic experiment. The simulation results reproduced the overall flow behaviors observed in the hydraulic experiment well. The flow starts to become influenced by the tail-water depth when the ratio of the tail-water depth to the total head exceeds approximately 0.7. As the ratio increases, the effect on the flow tends to grow dramatically. As shown in this study, a numerical simulation is effective for identifying the stage-discharge relationship of a venturi flume with various types of venturi bodies, including a venturi flume with a circular cone.

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참고문헌

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피인용 문헌

  1. Analysis of Overflow Characteristics around a Circular-Crested Weir by Using Numerical Model vol.30, pp.2, 2016, https://doi.org/10.11001/jksww.2016.30.2.147