Turbulent flow characteristics around a non-submerged rectangular obstacle on the side of an open channel
- Title
- Turbulent flow characteristics around a non-submerged rectangular obstacle on the side of an open channel
- Author
- 강석구
- Issue Date
- 2021-04
- Publisher
- AMER INST PHYSICS
- Citation
- PHYSICS OF FLUIDS, v. 33, NO. 4, article no. 45106
- Abstract
- The three-dimensional flow structure and turbulence characteristics around a non-submerged rectangular obstacle in an open channel are explored using numerical simulation. In particular, a low length-to-depth ratio condition, shown to be associated with three-dimensional flow features in our previous study, is considered. To sufficiently resolve all the important details of the three-dimensional turbulent flow around and in the entire wake of an obstacle, high-resolution large-eddy simulation (LES) employing is carried out on a parallel supercomputer. The LES results were compared with the measurements and analyzed to examine the horseshoe vortex structure, free-surface vortex structure, recirculation zones, vortex shedding process, turbulence characteristics, and wall shear stress distribution around an obstacle. The results provide important insights into the complete three-dimensional flow structure and wall shear stress patterns around the obstacle.
- URI
- https://aip.scitation.org/doi/10.1063/5.0042914https://repository.hanyang.ac.kr/handle/20.500.11754/176646
- ISSN
- 1070-6631;1089-7666
- DOI
- 10.1063/5.0042914
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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