نوع مقاله : مقاله پژوهشی
نویسندگان
1 عضو هیئت علمی دانشگاه شهید چمران اهواز
2 دانشگاه آزاد اسلامی واحد بین المللی کیش
3 عضو هیات علمی گروه مهندسی آب دانشگاه زنجان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Introduction
In this research, the sediment washing operation of Sefidrood Dam reservoir has been simulated using Numerical Flow 3D model with two turbulence models RNG and LES and the results with case studies performed on Sefidrood Dam reservoir in 2004 have been validated. In order to simulate, an area of the reservoir with an approximate length of 700 meters and also the dam wall were meshed in the form of 2 mesh blocks 1 and 2. Mesh block 1 was considered to include the dam wall as well as the area close to the dam wall as well as the lower Gates. The dam was considered to be of solid type, which is unchangeable, but the geometry of the reservoir bed was defined as sediment because it changes with the movement of the flow.
The results show that near the lower dischargers of the dam, the maximum amount of sediment washing up to the reservoir bed is conical. The high values of the explanation coefficient (R2) and the low values of the percentage of predictive error of the numerical model indicate the acceptable results of the Flow 3D model with the LES simulator in the flushing modeling of Sefidrood Dam. Comparison of the results indicates that the LES turbulence model has a better performance in estimating the maximum scour depth than the RNG turbulence model and the results are closer to the flushing results performed in 2004.
کلیدواژهها [English]
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