The comparison of the performance of single-equation models of turbulence kinetic energy and two k-e equation models in hydraulic simulation of dam failure on the mobile bed

سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 685

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شناسه ملی سند علمی:

ASECONF01_037

تاریخ نمایه سازی: 30 بهمن 1394

چکیده مقاله:

The selection of the type of turbulence models has an important impact on the performance of the numerical models for flow simulation in the computational fluid dynamics softwares. This research is conducted to determine the effectiveness of single-equation model of turbulence kinetic energy and two-equation model of K-Epsilon in simulation of positive wave movement caused by dam failure on a mobile bed. The research method included the numerical calculations using Flow-3D software. The reserach results showed that K-Epsilon model is more accurate in predicting the pattern of the flow’s free surface. Both models have the same accuracy in calculating the profile of the non-dimensional depth, velocity and acceleration of the advancing front of positive wave. Neither model could predict well the profile of mobile sediment bed. The final conclusion is that K-Epsilon turbulence model has higher efficiency in simulation of flow in dam failure on the mobile bed.

نویسندگان

Hossein Banejad

Member of Faculty of Bu-Ali Sina Hamedan and Ferdowsi Mashhad Universities, Iran

Majid Heydari

Member of Facculty of Bu-Ali Sina Hamedan University,Iran

Alireza Khoshkonesh

Ph.D student in Hydraulic Structures In Bu-Ali Sina Hamedan University

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  • Ancey, C , , Iverson, R.M .Rentschler, M. and Denlinger, ...
  • Celik, I.B.(1 999). Introductory Turbulence Modeling. Lecture Notes, West Virginia ...
  • Chow, V.T.(1 959). Open-Channel Hydraulics. M cGRAW-HILI Book Company, INC.680P. ...
  • Cozzo lino, L , _ C imorelli, L, Covelli, C ...
  • Di Cristo, C. , Leopardi, A. and Greco, M.(20 10).Modeling ...
  • Dressler, R.F.(1952). Hydraulic Resistance Effect Upon the Dam-Break Functions. Journal ...
  • Gladstone, C .Ritchie, L.., Sparks, R.S. and Woods, W. (2004).An ...
  • Kocaman, S. and Ozmen- Cagatay, H .(20 _ 5).Investigation of ...
  • Miller, S. and Chaudhry, M .H.(1989). Dam-Break Flows in Cyurved ...
  • Mohammadi, B .M. and Pironneu, O.(1 994)."Analysis of the k-e ...
  • Ozmen- Cagatay, H , and Kocaman, S.(20 _ 1).Dam-Break Flow ...
  • Ritter, A.(1 892). Die Fortpflunzung der Wasserwellen Z. Ver. deut. ...
  • Spinewine, B. and Zech, Y.(2003). Dam-Break Waves _ a Moveable ...
  • Speziale, C.G. and Thangam, S.(1992).Analysis of an RNG Based Turbulence ...
  • Spinewine, B .(2005). Two-Layer Flow Behaviour and the Effects of ...
  • Townson, J.M. and Al-Salihi, A.H.(1989).Models of Dam-Break Flow in R-T ...
  • Whitham, G.B.(1955).The Effects of Hydraulic Resistance in the Dam-Break Problem. ...
  • Wood, A. and Wang, K-H.(20 _ 5).Modeling Dam-Break Flows in ...
  • نمایش کامل مراجع