مشخصات پژوهش

عنوان	Please cite this article as: B. Sanamadi, M. Heydari, S.Gohari, S. Shabanlou, A numerical study on impact of side orifice dimensions on flow field characteristics of rectangular channels, Journal of Applied Research in Water and Wastewater, 9 (1) 16-22. Effects of side orifice dimensions on characteristics of flow field in rectangular channels
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	LOW-3D Flow pattern k-ε turbulence model Numerical simulation Rectangular side orifices
چکیده	In this paper, the flow in the vicinity of rectangular side orifices placed in main channels is estimated by means of the FLOW-3D model. To reconstruct the flow free surface, the volume of fluid (VOF) approach is utilized. In addition, the standard k-ε and RNG k-ε turbulence models are employed to predict turbulence flow. According to the results obtained from the numerical modeling, the RNG k-ε turbulence model has higher accuracy than the standard k-ε. The analysis of the numerical modeling results proved that this model forecasts the discharge coefficient of side weirs with suitable accuracy. On the other hand, the mean absolute percent error (MAPE) is calculated equal to 12.204%. Also, the maximum pressure is simulated near the main channel bed. Moreover, the minimum pressure is estimated near the flow free surface. Regarding the numerical simulations, the maximum turbulence energy state occurs near the inlet of the side orifice and by increasing the side orifice dimensions the flow field turbulence energy value increases.
پژوهشگران	بابک سان احمدی (نفر اول)، مجید حیدری (نفر دوم)، سعید گوهری (نفر سوم)، سعید شعبانلو (نفر چهارم)