چکیده مقاله
Saltation is the dominant mode of the sediment transport in rivers The focus of the present study is on the development of an accurate particle saltation model for the range of sand to gravel in the Lagrangian approach The model includes the non linear drag force, the shear lift force, Magnus force, the buoyancy force, the added mass force, the Basset history force and torque A sub model for the random process of the particle impact and rebound from the channel bed is also included i e particle–bed collision or splash model The results of the developed model were validated against experimental data By using the developed model, the mechanism of particle–bed collision was investigated under rough and smooth bed conditions The results showed that sediment saltations are quickly disappear under horizontal smooth bed surface Therefore, the consideration of a bed roughness model is essential for the simulation of the continuous bed load saltation process
کلیدواژهها
نویسندگان
Reza Barati
Ph D candidate, Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
سیدعلی اکبر صالحی نیشابوری
Prof , Water Engineering Research Center, Department of civil Engineering, Tarbiat Modares University, Tehran, Iran
Goodarz Ahmadi
Prof , Department of Mechanical and Aeronautical Engineering, Clarkson University,Potsdam, New York, USA
شیوه ارجاع
Barati, Reza and Salehi Neyshabouri, Seyed Ali Akbar and Ahmadi, Goodarz,1394,Development of a 3D Model for Continuous Bed-Load Saltation Process,10th International Congress on Civil Engineering,Tabriz
ارائهشده در
مجموعه مقالات دهمین کنگره بین المللی مهندسی عمران15 اردیبهشت 1394 · تبریز