نوع مقاله : مقاله پژوهشی
نویسندگان
گروه عمران-دانشکده مهندسی-دانشگاه بیرجند-بیرجند-ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Construction of hydraulic structures along rivers leads to disruption of the aquatic life cycle and ecosystem of the region. Fishway structures are widely used to facilitate access between downstream and upstream hydraulic structures crossing the river, such as dams, to eliminate the inability of fish to swim upstream, and to facilitate their downstream movement. Therefore, in the present study, in order to determine the optimal shape of the barriers used in the T-shaped fishway, the structure was simulated numerically with four types of barriers using OpenFOAM software and the K-ε turbulence model. The numerical model was validated by comparing its results with the results of the related laboratory model. The findings indicate a good agreement between the results of the numerical model and the laboratory results. Among the four specific configurations taking into account different factors, the D3 configuration of T-shaped barriers achieved 38.6% and 41.5% of reverse flow, 85.9% and 92.3% of flows with velocities less than 0.5 m/s, 51.6% and 17.8% of kinetic energy values of turbulence less than 0.02 m2/s2 and 72.1% and 19.3% of energy dissipation greater than 8, in longitudinal and transverse flow profiles respectively. had the best performance.
کلیدواژهها [English]
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