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Journal of Korean Society of Coastal and Ocean Engineers > Volume 30(6); 2018 > Article
J Korean Soc Coast Ocean Eng 2018;30(6): 319-325. doi: https://doi.org/10.9765/KSCOE.2018.30.6.319
도수 롤러의 거동 분석을 위한 실험 연구
박문형1, 김형석1, 최서혜1, 류용욱2
1한국건설기술연구원 국토연구보전본부
2부경대학교 해양공학과
Experimental Study on Oscillatory Behavior of Hydraulic Jump Roller
Moonhyung Park1, Hyung Su Kim1, Seohye Choi1, Yonguk Ryu2
1Dept of Land, Water Environment Research, Korea Institute of Civil Engineering and Building Technology
2Dept of Ocean Engineering, Pukyong National University, 45 Yongsoro, Busan 48513, Korea
Corresponding author: Yonguk Ryu ,Tel: +82-51-629-6582, Fax: +82-51-629-6590, Email: yuryu@pknu.ac.kr
Received: December 24, 2018;  Revised: December 27, 2018.  Accepted: December 27, 2018.
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ABSTRACT
This study conducted an experimental investigation on oscillatory behavior of the hydraulic jump roller. Based on the similarity of the hydraulic jump and tidal bore, the behavior of the front face of hydraulic jump with increasing downstream water depth was studied focusing on profile and fluctuation. In this study, for statistical approach, the ensemble averaging was applied to obtain relevant front profile and compared with the time averaging. The front profile gets mildly sloped and the fluctuation of the starting point of hydraulic jump decreases as the downstream water depth increases.
Keywords: hydraulic jump, roller, tidal bore, experiment, imaging technique
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