DAM-BREAK FLOW IN THE PRESENCE OF OBSTACLE: EXPERIMENT AND CFD SIMULATION

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dc.authoridKocaman, Selahattin/0000-0001-8918-0324
dc.contributor.authorOzmen-Cagatay, Hatice
dc.contributor.authorKocaman, Selahattin
dc.date.accessioned2024-09-18T20:15:01Z
dc.date.available2024-09-18T20:15:01Z
dc.date.issued2011
dc.departmentHatay Mustafa Kemal Ãœniversitesien_US
dc.description.abstractThe aim of this paper is to present an experimental and numerical investigation of dam-break flow over initially dry bed with a bottom obstacle. This test case highlights not only the bottom slope effects but also those of abrupt change in channel topography. Dam-break flow was applied in a smooth prismatic channel of rectangular cross-section over a trapezoidal bottom sill on the downstream bed. The present study scrutinized the formation and propagation of negative bore behind the sill. The flow was numerically simulated by the VOF-based commercially available CFD program, Flow-3D, solving the Reynolds Averaged Navier Stokes equations with the k-epsilon turbulence model (RANS) and the Shallow Water Equations (SWE). To validate CFD models an experiment was carried out. Using an advanced measuring technique, digital image processing, the flow was recorded simply through the glass walls of channel; thus, continuous free surface profiles were acquired synchronously with three cameras along the channel. The adopted measuring technique is non-intrusive and yields accurate and valuable results without flow disturbances. Comparison of the computed results with experimental data shows that RANS model reproduces the flow under investigation with reasonable accuracy while simple SWE model indicates some discrepancies particularly in predicting the negative wave propagation.en_US
dc.description.sponsorshipCukurova University [MMF2007BAP6]en_US
dc.description.sponsorshipThis work was partly supported by Cukurova University Research Fund under project no: MMF2007BAP6. This support is gratefully acknowledged.en_US
dc.identifier.doi10.1080/19942060.2011.11015393
dc.identifier.endpage552en_US
dc.identifier.issn1994-2060
dc.identifier.issn1997-003X
dc.identifier.issue4en_US
dc.identifier.startpage541en_US
dc.identifier.urihttps://doi.org/10.1080/19942060.2011.11015393
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9383
dc.identifier.volume5en_US
dc.identifier.wosWOS:000298273900009en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherHong Kong Polytechnic Univ, Dept Civil & Structural Engen_US
dc.relation.ispartofEngineering Applications of Computational Fluid Mechanicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectdam-breaken_US
dc.subjectdigital image processingen_US
dc.subjectobstacleen_US
dc.subjectCFDen_US
dc.subjectVOFen_US
dc.subjectk-epsilon turbulence modelen_US
dc.titleDAM-BREAK FLOW IN THE PRESENCE OF OBSTACLE: EXPERIMENT AND CFD SIMULATIONen_US
dc.typeArticleen_US

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