چکیده مقاله
Present study was conducted with application of numerical methods for investigating the turbulent flow over ogee stepped spillways For this purpose, the Finite Volume Finite Difference Method FV FDM was employed for numerical modelling of an ogee stepped spillway physical model belonging to a previous research study Various parameters over the steps like water surface profile, pressure, and velocity of flow over steps were studied The perfect conformity of numerical and laboratory results is clearly observed both visually and statistically Then, as a result of development of the numerical model, steps’ dimensions and geometries were changed and various spillways with smaller, larger, curved, obstacle, and steeped steps and even a smooth ogee spillway were investigated Different properties of flow over steps were studied more and energy dissipations were obtained using the relevant hydraulic formulation Results were compared with each other to survey the flow over the spillways Results show that specific forms of steps make the flow more turbulent, and dissipate the energy better in addition to reduce the cavitation risk
کلیدواژهها
نویسندگان
Azam Dolatshah
Islamic Azad University, Dezful Branch, Dezful, Iran
Hasan Imani Khoshkho
Islamic Azad University, Harsin Branch, Harsin, Iran
Mahmoud Mashal
University of Tehran, Tehran, Iran
Najaf Hedayat
Islamic Azad University, Dezful Branch, Dezful, Iran
شیوه ارجاع
Dolatshah, Azam and Imani Khoshkho, Hasan and Mashal, Mahmoud and Hedayat, Najaf,1394,Numerical Investigation of Turbulent Flow over Ogee Stepped Spillways,10th International Congress on Civil Engineering,Tabriz
ارائهشده در
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