بررسی پروفیل های طولی سرعت در اطراف سری آبشکن های نوع باندل لایک

Using permeable spur dikes is one of the controlling methods of rivers’ bank erosion. in this study, the influence of bandal- like spur dike on the longitudinal velocity profile is investigated in non-submerged situation. bandal-like is a new type of spur dike that is made of combination of permeable and impermeable spur dike. due to its combinatorial construction, this structure has important effect on the velocity controlling and decreasing. in this study, longitudinal velocity profiles around series of bandal-like spur dikes in 3 permeability rates of 30%, 45% and 64%, were investigated. the results indicated that this structure played an important role in controlling and decreasing the velocity in the banks due to the permeable zone. also by increasing permeability percentage from 30% to 64%, the value of increased about 6% in velocity profiles.