지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Scour in the downstream of hydraulic structures such as apron induces to collapse due to abruptly increasing rainfall and discharge in streams and reaches. This is because the forcible jet from overflowing is not sufficiently dissipated by existing energy dissipators, and it continues to sweep the bed materials during flood events. In this study, a second stilling basin was proposed as a countermeasure and the energy dissipation efficiency of this structure was analyzed using 3D-dimensional numerical analysis. First, results from previous research and hydraulic tests were used to verify the accuracy of the numerical model. It showed that the second stilling basin played a definite role in reducing the bottom velocity, comparing with diminishing the energy dissipation when numerical tests were conducted under scaled field conditions in Korea. This means that the second stilling basin can be a countermeasure against scour in downstream. If more efficiency analysis of the second stilling basin would be performed in terms of energy dissipator for various types of hydraulic jump, it would be an alternative solution to scouring issues.
목차
등록된 정보가 없습니다.
참고문헌 (10)
참고문헌 신청
N. E. Bormann / 1991 / Scour Downstream of Grade-control Structures / Journal of Hydraulic Engineering 117(5):579~594
A. Salah / 2013 / Effect of Semi-circular Baffle Blocks on Local Scour Downstream Clear-overfall Weirs / Ain Shams Engineering Journal 4(4):675~684
S. E. Yoon / 1995 / Examination on the Experimental Prediction of Scour Depths Caused by Jets / Journal of Korea Water Resources Association 30(6):437~446
H. Babaali / 2015 / Computational Modeling of the Hydraulic Jump in the Stilling Basin with Convergence walls using CFD Codes / Arabian Journal for Science and Engineering 40(2):381~395
F. Naseri / 2018 / Effect of Inlet Flow Condition on Hydrodynamic Parameters of Stilling Basins / Acta Mechanica 229(3):1415~1428
A. Salah / 2013 / Effect of Semi-circular Baffle Blocks on Local Scour Downstream Clear-overfall Weirs / Ain Shams Engineering Journal 4(4):675~684
S. E. Yoon / 1995 / Examination on the Experimental Prediction of Scour Depths Caused by Jets / Journal of Korea Water Resources Association 30(6):437~446
H. Babaali / 2015 / Computational Modeling of the Hydraulic Jump in the Stilling Basin with Convergence walls using CFD Codes / Arabian Journal for Science and Engineering 40(2):381~395
F. Naseri / 2018 / Effect of Inlet Flow Condition on Hydrodynamic Parameters of Stilling Basins / Acta Mechanica 229(3):1415~1428
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