Simulation of flows over an Air-Regulated Siphon Spillway
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 4
Abstract
: The air-regulated siphon spillways are adopted on streams that are subjected to flash floods or where there is insufficient space to provide conventional weirs. Discharge in an air – regulated spillway is solely governed by the area of the waterway at throat section. Air – regulated siphon spillway work automatically for a wide range of discharges even for a small rise in the upstream water level, without any mechanical or human interference. The physical model of air-regulated siphon was made of acrylic and mounted in a glass sided channel at RGKUT, Basar. The present work focuses on the experimental studies carried out for various discharges ranging from 4.3 lps to 7.2 lps. The simulation studies were carried out using ANSYS-CFD. The simulations were extended to determine the flow pattern and the free surface level on the upstream and downstream of the siphon in the flume. The user-defined macro was generated to evaluate the flow pattern upstream, at the crest level of the siphon and downstream of the air-regulated siphon spillway. The comparative analysis proved that the Fluent software is a powerful tool in evaluating the flow properties of the model even in the absence of physical modeling.
Authors and Affiliations
Prasanna S V S N D L, Suresh Kumar N
Keywords
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