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Experimental and Numerical Investigation of Flow Over Ogee Spillway
Water Resources Management ( IF 4.3 ) Pub Date : 2020-10-06 , DOI: 10.1007/s11269-020-02558-9
Öznur Kocaer , Alpaslan Yarar

Ogee type spillway is one of the most preferred sluice types due to its functional suitability and high safety factor. It is used for controlling the flow rates and water levels in reservoirs, such as lowering the water level in emergency situations, maintaining normal river functions and discharging excess water. The main aim of this study is to investigate the flow over ogee type spillway by performing experiments in an open channel flume in the laboratory and simulating with numerical model. The numerical model having the same dimensions with the physical model is modeled with two different programs of ANSYS-Fluent and OpenFOAM. The flow depths of the models were measured at four points, H1, H2, H3, H4. In the numerical analysis, two different turbulence models, K-ε and K-ω SST turbulence model were used in order to investigate the accuracy of the turbulence models in the open channel. According to the results, R2 values, obtained from ANSYS- Fluent for the each measurement points where H1, H2, H3, H4, are 0.9776, 0.9859, 0.9701, 0.9916 and obtained from OpenFOAM for the each measurement points 0.9920, 0.9687, 0.9855, 0.9926 respectively. The findings show that the numerical tools have been sufficiently developed to simulate flow depths and water surface profiles.



中文翻译:

Ogee溢洪道水流的实验与数值研究

Ogee型溢洪道由于其功能适合性和较高的安全系数而成为最优选的水闸类型之一。它用于控制水库中的流量和水位,例如在紧急情况下降低水位,维持正常的河流功能和排放多余的水。这项研究的主要目的是通过在实验室中的明渠水槽中进行实验并利用数值模型进行模拟来研究泥石型溢洪道的水流。用两个不同的ANSYS-Fluent和OpenFOAM程序对与物理模型具有相同尺寸的数值模型进行建模。在四个点H 1,H 2,H 3,H 4处测量模型的流动深度。在数值分析中,为了研究明渠中湍流模型的准确性,使用了两个不同的湍流模型K-ε和K-ωSST湍流模型。根据结果​​,从ANSYS-Fluent获得每个测量点的R 2值,其中H 1,H 2,H 3,H 4分别为0.9776、0.9859、0.9701、0.9916,并从OpenFOAM获得每个测量点的0.9920 ,0.9687、0.9855和0.9926。研究结果表明,已经充分开发了数值工具来模拟水深和​​水面轮廓。

更新日期:2020-10-07
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