A simple method to predict flow distribution at vertical angled screens in open channels

Abstract

This paper presents a simple method to predict flow diversion by vertical angled screens in open channels. The performance of this method has been compared with the experimental results from a recent laboratory study of vertical angled screens. This method is then used to predict the effect of screen porosity, variation of porosity along the length of the screen, and several other factors on the flow division. The results of this investigation would be useful in the design of vertical angled screens for fish protection at water intakes from rivers for irrigation, and other industrial uses.Key words: fish screens, intakes, water flow, irrigation canals, open channel flow, hydraulics and fish diversion.