Numerical simulation of flow for the improvement of the access channel to the port of Quila (Barranguila) in Colombia by using T form Groyne structure

Barranguila is located on the left bank of the Magdalena River, about ۲۲ km from the outskirts of the mouth. The river flows in the direction of the north to the Caribbean. Measures were taken to create a duct with a width of ۱۵۰ meters and a depth of ۹.۲ meters in the river. In this research, the factors affecting the sedimentation and erosion process in terms of structural modifications in the access channel were investigated using numerical methods. In the present study, the numerical results of the effect of non-volumetric spray drift with ۹۰۰ T-shaped spray guns, relative to the external wall of an arch with a length of ۱۵ channel width, on the average velocity distribution and shear stress in a ۹۰۰ gentle arch with a ratio of 𝐑/𝐁 = ۴, ۰.۷ m wide and ۰.۱۴ m water depth. The results of the study showed that the presence of a spur gear causes uniformity of upstream velocity and high-speed transmission from the outer wall to the middle of the canal to the inner wall. The shear stress of the bed is increased due to the presence of a spray gun but has little effect on the location of the shear stress incidence. As it can be seen, the negative pressure in the outer arc is increased and in the external arc exposed to erosion due to the high forces caused by positive pressure, the reduction of the Groyne is reduced and the conditions for the stabilization of the bed are provided. As can be seen, in the inner arc, after the construction of a Groyne, a negative pressure increases as well, and the ability to precipitate in this area also increases.

کلیدواژه ها:

T form Groyne ، Flow Pattern ، Secondary Currents ، ۹۰ degree bend ، port of Quila