Author(s): David Calderon Villegas; Aldo German Benavides; Francisco Mauricio Toro

Linked Author(s):

Keywords: Ir demand; ANSYS-FLUENT; Bottom outlet; CFD; Radial gate; VOF method

Abstract: This study presents a three-dimensional CFD model of the air-water flow in a free surface discharge tunnel of a typical bottom outlet with a high head gate. The numerical simulation is performed in ANSYS-FLUENT. Results of volume fraction, velocity, and pressure fields are analyzed for two gate openings, i. e. 54% and 100%. The free surface flow in the conduit is calculated by means of the VOF method. Finally, a novel methodology is presented to calculate the air demand distribution as part of the design of the aeration system in bottom outlets with high head gates.

DOI: https://doi.org/10.15142/T3TW7D

Year: 2018