Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 강석구 | - |
dc.date.accessioned | 2019-02-12T05:34:49Z | - |
dc.date.available | 2019-02-12T05:34:49Z | - |
dc.date.issued | 2016-10 | - |
dc.identifier.citation | WATER RESOURCES RESEARCH, v. 52, NO. 10, Page. 7869-7891 | en_US |
dc.identifier.issn | 0043-1397 | - |
dc.identifier.issn | 1944-7973 | - |
dc.identifier.uri | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016WR018688 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/98861 | - |
dc.description.abstract | We investigate the flow dynamics around a rock vane, a widely used instream structure for stream restoration, by conducting laboratory flume experiments, and carrying out high-resolution Large Eddy Simulation (LES) taking advantage of parallel computing. The flume experiments are conducted under fixed- and mobile-bed conditions, where the velocities and bed elevations are measured, respectively. The LES is carried out for the fixed-bed experiment by directly resolving the details of the rocks that constitute the vane and the individual roughness elements on the channel bed. The LES-computed mean flow statistics show good agreement with the measurements, and the analysis of the computed flow field reveals the existence of two counter-rotating secondary flow cells downstream of the vane, which originate from the plunging of the three-dimensional streamlines onto a lower part of the sidewall downstream of the vane. To further examine the role of the secondary flow cells under a mobile-bed condition, the LES results are compared with the equilibrium bed elevation measured in the mobile bed experiment. The mobile-bed experiment reveals the existence of an oblique sand ridge downstream of the vane that is aligned with the line of flow convergence caused by the collision of the two secondary flow cells. The results indicate that the two counter-rotating cells downstream of the rock vane has a profound impact on the mean flow and bed shear stress as well as on the bed morphodynamics. | en_US |
dc.description.sponsorship | This work was supported by the NRF (National Research Foundation) of Korea grant (NRF-2015R1C1A1A01054677). To access the data associated with this research, please contact the corresponding author. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER GEOPHYSICAL UNION | en_US |
dc.subject | stream restoration | en_US |
dc.subject | turbulence | en_US |
dc.title | On the turbulent flow structure around an instream structure with realistic geometry | en_US |
dc.type | Article | en_US |
dc.relation.no | 10 | - |
dc.relation.volume | 52 | - |
dc.identifier.doi | 10.1002/2016WR018688 | - |
dc.relation.page | 7869-7891 | - |
dc.relation.journal | WATER RESOURCES RESEARCH | - |
dc.contributor.googleauthor | Kang, Seokkoo | - |
dc.contributor.googleauthor | Hill, Craig | - |
dc.contributor.googleauthor | Sotiropoulos, Fotis | - |
dc.relation.code | 2016003336 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING | - |
dc.identifier.pid | kangsk78 | - |
dc.identifier.orcid | http://orcid.org/0000-0002-9020-436X | - |
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