Flow Analysis in a Pool and Weir Type Fishway

Abstract

This paper presents 2-dimensional flow characteristics in a pool type fishway by using the VOF method. The fishway with 5 pools is treated as an object of the study. Considering the flow pattern of a pool type fishway, the analytical region is divided into 3 parts, which are the upstream part, the middle part and the downstream part of the fishway. As a result, the proposed method is able to reproduce the flow in the pool type fishway with many pools. And it is also clarified that the down stream water level condition plays a very important roll to design the pool type fishway.