Effect of Gradation on Sediment Trapping Efficiency in Structures of Vortex Tube with Different Angles

Subject Areas : hydraulic structures

ali asareh ¹ (Department of Water Sciences and Engineering, Ahvaz branch, Islamic Azad university, Ahvaz, Iran)
sina jamshidi orak ² (Department of Water Sciences and Engineering, Ahvaz branch, Islamic Azad university, Ahvaz, Iran)

Received: 2022-01-02 Accepted : 2022-02-03 Published : 2021-12-22

Keywords: Sediment, trapping, vortex tube, orifice percentage, the Froude number,

Abstract :

Due to the fact that many variables are effective in the amount of sediment trapping and the amount of water loss in the eddy tube, this study was conducted to investigate the performance of the eddy tube in laboratory conditions. 4 ratio of pipe gap width to pipe diameter (t / d), 0.15, 0.20, 0.25 and 0.3, 3 granulation D1 (particles passing through sieve 8 and remaining on sieve 10), D2 (particles passing through sieve 16 and remaining on sieve 20) and D3 (particles passing through sieve 20 and remaining on sieve 30) were selected at a 45 degree angle with different flow rates. The results showed that if the area is not facing water shortage and water supply problems and preventing sediment from entering the system is preferable to water supply, t / d = 0.3 is a more desirable option; But if it is very important in water supply areas and there is basically water shortage; The better option is t / d = 0.25.