Optimization of Stepped Spillway Dimensions and Investigation of Flow Energy Dissipation over a Physical Model

Barani, Gholam‐Abbas; Rahnama, Mani; Bagheri, Hadi

doi:10.3923/jas.2005.878.882

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…Due to the complexity of energy dissipation equations existing in literature, traditional optimization techniques are hard to apply successfully. However, with the development of meta-heuristic methods and evolutionary algorithms, some optimization works such that of Barani et al (2005) was carried out by applying the Feasible Direction Method (FDM) to find the best dimensions of steps which maximize the energy dissipation. Other works were achieved to minimize the construction cost using Genetic Algorithm (GA) (Haddad et al 2005), Honey-Bee Mating Optimization (HBMO) (Haddad et al 2010) and Harmony Search Algorithm (HAS) (Hassanvand et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of stepped spillway and stilling basin dimensions

2021

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In the present paper, an optimization procedure is proposed for stepped spillway design dimensions, which leads to maximum energy dissipation rate and minimum construction cost considering independently the chute cost and stilling basin cost. Three independent objective functions are thus simultaneously satisfied. The procedure involves four main tools: The multi-objective particle swarm optimization method (MOPSO) to find Pareto solutions in one run, the K-means clustering algorithm to reduce the size of the obtained non-dominated solutions, the pseudo-weight vector approach (PWV) to facilitate the decision making and to select some adequate solutions, and finally, CFD simulations to analyze the retained optimal solutions. The suitability of the proposed procedure is tested through an example of application. As results, a set of twenty solutions with different satisfaction levels are found and compared to existing solutions. A multi-objective optimization problem may have many different solutions, the originality of the present work lies in the proposed procedure which explores several possible ones and reduces their number to give help for the decision making. Furthermore, an approximate expression of spillway total cost is also derived as a function of flow energy dissipation rate.

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Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of stepped spillway and stilling basin dimensions

2021

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“…The energy dissipation over vertical free fall and stepped drops was studied via experimental models, and the results showed that the energy dissipation increased with total drop height [9]. The energy dissipation over stepped spillway was measured by using a physical model and concluded that for small dams with low flow rates, a stepped spillway dissipates more kinetic energy than other types [10]. The effect of some parameters such as flow rate and number of steps on energy dissipation was examined [11].…”

Section: Introductionmentioning

confidence: 99%

Energy dissipation evaluation for stepped spillway using a fuzzy inference system

2020

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In this study, to evaluate the effects of geometry parameters on the dissipation rate in flows over the stepped spillways, a numerical model is provided and validated by using a physical model. A type of Fuzzy Inference System (FIS) is used to study the control of the rates of dissipation. It is used to measure the estimated energy dissipation under different scenarios, and the results are compared with prepared numerical database. An error criterion is used to examine the prediction accuracy of the FIS measurements. The realization of these kinds of considerations may, in turn, lead to a remarkable reduction in the dimensions of stilling basins. The results indicate that proposed FIS can be used as a valuable tool for operational control of dissipater structures with consideration of different geometric parameters. The method is proposed somehow to consider the uncertainty problems with consideration of the benefits, and some shortcomings noted in the literature.

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Geobag stepped spillway for check dams: A pilot study

Yang²,

Zhang³

et al. 2023

International Journal of Sediment Research

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Optimization of Stepped Spillway Dimensions and Investigation of Flow Energy Dissipation over a Physical Model

Cited by 7 publications

References 6 publications

Multi-objective optimization of stepped spillway and stilling basin dimensions

Multi-objective optimization of stepped spillway and stilling basin dimensions

Energy dissipation evaluation for stepped spillway using a fuzzy inference system

Geobag stepped spillway for check dams: A pilot study

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