نوع مقاله: مقاله پژوهشی
نویسندگان
1 گروه مهندسی آب دانشگاه تبریز
2 استادیار سازه های آبی، دانشکده کشاورزی، دانشگاه تبریز.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
For a given of channel width, duckbill and oblique weirs have longer effective length, and this could be effective on their discharge coefficients and efficiency. In this study, tried to examined the role of some of the hydraulic and geometric parameters of mentioned weirs and their height on discharge coefficient into channel using Fluent numerical model and the results of this model compared with Flow-3D model and experiments data. The pressure, velocity, turbulence and the free surface of the flow were modeled by k-ε RNG and volume of fluid (VOF) algorithms, respectively. The NRMSE of Fluent model in the simulation of the discharge coefficient was 0.0565, which indicates the high accuracy of the model. Results showed that in both weirs, the discharge coefficient decreases with increasing discharge or upstream head. The maximum discharge coefficient was found in the H/P≤ 0.35 in both weirs. The results indicated the oblique weirs had a higher discharge coefficient compared with duckbill weirs and thus had higher flow capacity.
کلیدواژهها [English]
)
ارسال نظر در مورد این مقاله