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dc.contributor.author강석구-
dc.date.accessioned2017-08-11T02:25:49Z-
dc.date.available2017-08-11T02:25:49Z-
dc.date.issued2015-10-
dc.identifier.citationJOURNAL OF HYDRAULIC ENGINEERING, v. 141, NO 10, Page. 1-11en_US
dc.identifier.issn0733-9429-
dc.identifier.issn1943-7900-
dc.identifier.urihttp://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0001034-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/28487-
dc.description.abstractLarge-eddy simulation (LES) of a three-dimensional, turbulent free surface flow past a stream restoration structure with arbitrarily complex geometries is presented. The three-dimensional, incompressible, spatially filtered Navier-Stokes and continuity equations are solved in generalized curvilinear coordinates. For the solution of mixed air-water flows, the curvilinear immersed boundary (CURVIB)-level set method developed previously is used and extended to carry out LES. Complex solid geometries are handled by the sharp-interface CURVIB method, and the subgrid scale stress terms arising from the spatial filtering of the Navier-Stokes equations are closed by the dynamic Smagorinsky model. To demonstrate the potential of the CURVIB-LES-level set model for simulating real-life, turbulent free surface flows involving arbitrarily complex geometries, LES is carried out for the flow past a complex rock structure that is fully submerged in water in a laboratory flume. The simulations show that the method is able to predict the time-averaged value as well as the root-mean-square fluctuations of water surfaces with good accuracy. Moreover, it is seen that the free surface flow at a high Froude number causes a significant level of fluctuations of water surface elevation and velocity at the water surface. (C) 2015 American Society of Civil Engineers.en_US
dc.description.sponsorshipThis work was supported by National Science Foundation (NSF) grants EAR-0120914 (as part of the National Center for Earth-Surface Dynamics) and IIP-1318201. The first author acknowledges that this research was partially supported by a grant (14CTAP-C077529-01) from the Infrastructure and Transportation Technology Promotion Research Program funded by the Ministry of Land, Infrastructure and Transport of the Korean government.en_US
dc.language.isoenen_US
dc.publisherASCE-AMER SOC CIVIL ENGINEERSen_US
dc.subjectFree surface flowen_US
dc.subjectLevel set methoden_US
dc.subjectImmersed boundary methoden_US
dc.subjectLarge-eddy simulationen_US
dc.subjectTurbulenceen_US
dc.titleLarge-Eddy Simulation of Three-Dimensional Turbulent Free Surface Flow Past a Complex Stream Restoration Structureen_US
dc.typeArticleen_US
dc.relation.no10-
dc.relation.volume141-
dc.identifier.doi10.1061/(ASCE)HY.1943-7900.0001034-
dc.relation.page1-11-
dc.relation.journalJOURNAL OF HYDRAULIC ENGINEERING-
dc.contributor.googleauthorKang, Seokkoo-
dc.contributor.googleauthorSotiropoulos, Fotis-
dc.relation.code2015002670-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING-
dc.identifier.pidkangsk78-
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COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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