FE modeling of flow over stepped spillways: A case study of spillway of Siah-Bishe dam

Amirhosein Parvizi, Vahidreza Amiresmaili, Seyyed Behnam Beheshti, Seyed Mohammad Ali Razavizadeh, Mojtaba Gorji Azandariani and Mohammad Reza Halvaeyfar

Abstract

Stepped spillway is one of the common types of spillways for water projects, and nowadays, it is considered due to its many benefits and they are used in many dam construction projects. The correct design and ensuring from proper these spillways require accurate analysis of the flow and has always been among the concerns of the dam's experts. Nowadays, using computers and numerical methods are a powerful tool for analyzing the flow and designing of water structures, and it is very useful in designing the primary spillways and optimizing them along with the construction of the hydraulic model. In this study, numerical modelling of flow over stepped spillways with different steps are presented, as well as optimization of the heights of steps. Also, a case study has been carried out about the Siah Bishe Dam spillway, in which the advantages and disadvantages of the numerical methods have been provided for optimizing the design. The computational fluid dynamics module of the finite element ANSYS FLUENT software was applied to assess the velocity vectors and pressure of the flow. According to the real flow is turbulent, the k–

Key Words

CFD simulation; flow analysis; numerical method; optimization; stepped spillway; steps dimensions

Address

(1) Amirhosein Parvizi: Department of Civil Engineering, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran; (2) Vahidreza Amiresmaili: Department of Civil Engineering, University of Saravan, Saravan, Iran; (3) Seyyed Behnam Beheshti: Department of Civil Engineering, Khomein Branch, Islamic Azad University, Khomein, Iran; (4) Seyed Mohammad Ali Razavizadeh: Department of Civil Engineering, National University of Skills (NUS), Tehran, Iran; (5) Mojtaba Gorji Azandariani: Structural Engineering Division, Faculty of Civil Engineering, Semnan University, Semnan, Iran; (6) Mohammad Reza Halvaeyfar: Department of Civil Engineering, Dezful Branch, Islamic Azad University, Dezful, Iran.

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