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Journal of Applied Research in Water and Wastewater
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Azimi, H., Heydari, M., Shabanlou, S. (2018). Numerical simulation of the effects of downstream obstacles on malpasset dam break pattern. Journal of Applied Research in Water and Wastewater, 5(2), 441-446. doi: 10.22126/arww.2018.1007
Hamed Azimi; Majeid Heydari; Saeid Shabanlou. "Numerical simulation of the effects of downstream obstacles on malpasset dam break pattern". Journal of Applied Research in Water and Wastewater, 5, 2, 2018, 441-446. doi: 10.22126/arww.2018.1007
Azimi, H., Heydari, M., Shabanlou, S. (2018). 'Numerical simulation of the effects of downstream obstacles on malpasset dam break pattern', Journal of Applied Research in Water and Wastewater, 5(2), pp. 441-446. doi: 10.22126/arww.2018.1007
Azimi, H., Heydari, M., Shabanlou, S. Numerical simulation of the effects of downstream obstacles on malpasset dam break pattern. Journal of Applied Research in Water and Wastewater, 2018; 5(2): 441-446. doi: 10.22126/arww.2018.1007

Numerical simulation of the effects of downstream obstacles on malpasset dam break pattern

Article 5, Volume 5, Issue 2 - Serial Number 10, Summer and Autumn 2018, Page 441-446  XML PDF (1137 K)
Document Type: Research Paper
DOI: 10.22126/arww.2018.1007
Authors
Hamed Azimi1; Majeid Heydari* 2; Saeid Shabanlou3
1Young Researchers Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
2Department of Science and Water Engineering, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
3Department of Water Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.
Abstract
Dam break is an important phenomenon which significantly affects the environment as well as the inhabitants of the downstream areas of the dam. In the present study, the hydraulic break of Malpasset dam as a result of sudden flooding was simulated numerically using the FLOW-3D software. The two-equation k-ε turbulence models and RNG k-ε turbulence model were used to simulate the flow field turbulence. Also, the free-surface variations of the flow were simulated using the VOF (Volume of Fluid) scheme. The results obtained from the numerical model were in good agreement with those predicted by the EDF model. Based on the simulation results, the maximum pressure occurred at the lower layers of the flow and reduced as the free surface of the flow was approached. The maximum pressure increased at each point in time. The maximum longitudinal velocity occurred at the front of the advancing wave resulting from break of the dam, and subsequently decreased due to the increasing depth at the downstream of the dam. Additionally, the effects of obstacles with different shapes on the flow pattern arising from dam break (due to sudden flooding) were also investigated. Examination of these effects revealed that the cubic obstacle placed obliquely in the flow direction produced the maximum separation region at its downstream. Conversely, this separation region was eliminated completely when a cylindrical obstacle was used. The maximum and minimum Froude numbers were obtained for the flow encountering the perpendicular cubic obstacle and the flow impacting the cylindrical obstacle, respectively.
Keywords
Dam break; Malpasset dam; Numerical simulation; Flow pattern
References
Aziz khan A., Steffler P.M., Gerard R., Dam break with surges with floating debris, Journal of Hydraulic Engineering ASCE, 126 (2000) 375-379.
Bellos C.V., Experimental measurement of flood wave created by a dam break, European Water 7 (2004) 3-15.
Bellos C.V., Soulis J.V. and Sakkas J.G., Experimental investigation of two dimensional dam-break induced flows, Journal of Hydraulic Research 33 (1992) 843-864.
Bell S.W., Elliot R.C. and Chaudhry M.h., Experimental results of two dimensional dam-break flows, Journal of Hydraulic Research 30 (1992) 47-63.
Caboussat A., Boyaval S., Masserey A., Three-dimensional simulation of dam break flows, Mathicse Technical Report (2012)1-24.

Cagatay H.O, Kocaman S., Dam-break flow in the presence of obstacle: experiment and CFD simulation, Engineering Applications of Computational Fluid Mechanics 5 (2011) 41–552.
Eaket J., Hicks F.E., Peterson A.E., Use of stereoscopy for dam break flow measurement, Journal of Hydraulic Engineering ASCE, 131 (2005) 24-29.
FLOW 3D User’s Manual. 2011. Version 10.0. Flow Science Inc.
Fraccarollo L., and Toro E.F., Experimental and numerical assessment of the shallow water model for two dimensional dam-break type problems, Journal of Hydraulic Research 33 (1995) 843-864.
Kocaman S., and Güzel H., Numerical and experimental investigation of dam break wave on a single building situated downstream. International Balkans Conference on Challenges of Civil Engineering, bcce, EPOKA University, Tirana, Albania, 2011.
Mirei Shige E., and Akiyama J., Numerical and experimental study of two-dimensional flood flows with and without structures, Journal of Hydraulic Engineering 129 (2003) 817-821.
Soares Frazao S., and Zech Y., Dam break in channels with 90 Bend, Journal of Hydraulic Engineering 128 (2002) 956-968.
Singh J., Altinakar M.S., Ding Y., Two-dimensional numerical modeling of dam break flows over natural terrain using a central explicit scheme, Advances in Water Resources 34 (2011) 1366-1375.

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