Fig.(9) Turbulent dissipation for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s

The energy dissipation of Stepped Spillways experimentally and numerically

계단식 여수로는 댐의 통합된 부분인 수압 구조로, 넘침 흐름의 안전한 통과를 허용합니다. 이 논문에서는 에너지 소산을 최대한 활용하기 위해 여수로의 상대적인 계단 높이가 다른 영향을 조사하기 위해 실험적 및 수치적 연구를 수행했습니다.

여수로 위의 흐름 모델링은 RANS(Reynolds Averaged Navier-Stokes) 방정식을 푸는 상용 3D CFD 모델인 FLOW-3D를 사용하여 수행되었습니다.

FLOW-3D는 에너지 소산율을 분석하고 얻기 위해 사용되었습니다. 최대 에너지 소산을 달성할 수 있는 계단의 최상의 기하학은 관련 문헌을 검토하고 FLOW-3D에서 제안된 모델을 발명하여 결정되었습니다.

결과는 배수로의 상대적 계단 높이(hs/H) = 0.25. FLOW-3D를 사용한 수치모델은 다양한 실험모델에 대한 측정 데이터와 잘 일치하는 것으로 나타났습니다.

A. ShawkyAwada ,T. Hemdan Nasr-Allah a , Y. Abdallah Mohamed , b G. Mohamed Abdel-Aalb.
a Benah University, Faculty of Engineering, Egypt
b Zagazig University, Faculty of Engineering, Egypt

KEYWORDS

Stepped spillway, FLOW-3D, energy dissipation

Photo (1) general view of laboratory apparatus and flow direction
Photo (1) general view of laboratory apparatus and flow direction
Photo (2) stepped spillways for (hs/H) =0.17,0.25
Photo (2) stepped spillways for (hs/H) =0.17,0.25
Fig.(6) Pressure contours for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s Fig.(7) Velocity magnitude for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s
Fig.(6) Pressure contours for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s Fig.(7) Velocity magnitude for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s
Fig.(8) Flow depth for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s
Fig.(8) Flow depth for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s
Fig.(9) Turbulent dissipation for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s
Fig.(9) Turbulent dissipation for (hs/H)= 0.5, 0.33, 0.25, 0.17and 0.11) for Q = 40 l/s

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