Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom
Dam-break flood waves represent a severe threat to people and properties located in downstream regions. Although dam failure has been among the main subjects investigated in academia, little effort has been made toward investigating wave propagation under the influence of tailwater depth. This work...
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MDPI AG
2021-06-01
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| author | Selahattin Kocaman Stefania Evangelista Hasan Guzel Kaan Dal Ada Yilmaz Giacomo Viccione |
| author_facet | Selahattin Kocaman Stefania Evangelista Hasan Guzel Kaan Dal Ada Yilmaz Giacomo Viccione |
| author_sort | Selahattin Kocaman |
| collection | DOAJ |
| description | Dam-break flood waves represent a severe threat to people and properties located in downstream regions. Although dam failure has been among the main subjects investigated in academia, little effort has been made toward investigating wave propagation under the influence of tailwater depth. This work presents three-dimensional (3D) numerical simulations of laboratory experiments of dam-breaks with tailwater performed at the Laboratory of Hydraulics of Iskenderun Technical University, Turkey. The dam-break wave was generated by the instantaneous removal of a sluice gate positioned at the center of a transversal wall forming the reservoir. Specifically, in order to understand the influence of tailwater level on wave propagation, three tests were conducted under the conditions of dry and wet downstream bottom with two different tailwater depths, respectively. The present research analyzes the propagation of the positive and negative wave originated by the dam-break, as well as the wave reflection against the channel’s downstream closed boundary. Digital image processing was used to track water surface patterns, and ultrasonic sensors were positioned at five different locations along the channel in order to obtain water stage hydrographs. Laboratory measurements were compared against the numerical results obtained through FLOW-3D commercial software, solving the 3D Reynolds-Averaged Navier–Stokes (RANS) with the <i>k</i>-<i>ε</i> turbulence model for closure, and Shallow Water Equations (SWEs). The comparison achieved a reasonable agreement with both numerical models, although the RANS showed in general, as expected, a better performance. |
| first_indexed | 2024-03-10T10:17:42Z |
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| id | doaj.art-8577831a3a204bbc86990f28f652c5f6 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T10:17:42Z |
| publishDate | 2021-06-01 |
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| series | Applied Sciences |
| spelling | doaj.art-8577831a3a204bbc86990f28f652c5f62023-11-22T00:40:36ZengMDPI AGApplied Sciences2076-34172021-06-011112563810.3390/app11125638Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet BottomSelahattin Kocaman0Stefania Evangelista1Hasan Guzel2Kaan Dal3Ada Yilmaz4Giacomo Viccione5Department of Civil Engineering, Iskenderun Technical University, Hatay 31200, TurkeyDepartment of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, 03043 Cassino, FR, ItalyDepartment of Civil Engineering, Iskenderun Technical University, Hatay 31200, TurkeyDepartment of Civil Engineering, Iskenderun Technical University, Hatay 31200, TurkeyDepartment of Civil Engineering, Iskenderun Technical University, Hatay 31200, TurkeyDepartment of Civil Engineering, University of Salerno, 84084 Fisciano, SA, ItalyDam-break flood waves represent a severe threat to people and properties located in downstream regions. Although dam failure has been among the main subjects investigated in academia, little effort has been made toward investigating wave propagation under the influence of tailwater depth. This work presents three-dimensional (3D) numerical simulations of laboratory experiments of dam-breaks with tailwater performed at the Laboratory of Hydraulics of Iskenderun Technical University, Turkey. The dam-break wave was generated by the instantaneous removal of a sluice gate positioned at the center of a transversal wall forming the reservoir. Specifically, in order to understand the influence of tailwater level on wave propagation, three tests were conducted under the conditions of dry and wet downstream bottom with two different tailwater depths, respectively. The present research analyzes the propagation of the positive and negative wave originated by the dam-break, as well as the wave reflection against the channel’s downstream closed boundary. Digital image processing was used to track water surface patterns, and ultrasonic sensors were positioned at five different locations along the channel in order to obtain water stage hydrographs. Laboratory measurements were compared against the numerical results obtained through FLOW-3D commercial software, solving the 3D Reynolds-Averaged Navier–Stokes (RANS) with the <i>k</i>-<i>ε</i> turbulence model for closure, and Shallow Water Equations (SWEs). The comparison achieved a reasonable agreement with both numerical models, although the RANS showed in general, as expected, a better performance.https://www.mdpi.com/2076-3417/11/12/5638dam-breaklaboratory experimentsCFDunsteady flowtailwaterwave front velocity |
| spellingShingle | Selahattin Kocaman Stefania Evangelista Hasan Guzel Kaan Dal Ada Yilmaz Giacomo Viccione Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom Applied Sciences dam-break laboratory experiments CFD unsteady flow tailwater wave front velocity |
| title | Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom |
| title_full | Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom |
| title_fullStr | Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom |
| title_full_unstemmed | Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom |
| title_short | Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom |
| title_sort | experimental and numerical investigation of 3d dam break wave propagation in an enclosed domain with dry and wet bottom |
| topic | dam-break laboratory experiments CFD unsteady flow tailwater wave front velocity |
| url | https://www.mdpi.com/2076-3417/11/12/5638 |
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