Author(s): Van Thinh Nguyen; Jihwan Kim

Linked Author(s): Van Thinh Nguyen

Keywords: Confluent flow; Discharge ratio; Junction angle; Separation zone; Turbulence

Abstract: This study aims to conduct a three-dimensional numerical investigation of the effect of various discharge ratios and junction angles of confluent flow on flow patterns, shapes of separation zones and water levels. The flow calculation is based on the Reynolds-Averaged Navier-Stokes (RANS) equations for the mean flow field together with two-equation SST k-ω turbulence closure model. In addition, the free surface level is tracking by the volume of fluid (VOF) method. The numerical simulations are carried out for different discharge ratios and junction angles. The results are validated against the observation data obtained from various experiments. It shows that an increase in the discharge ratio and junction angle is resulting in enlarging the separation zone; and an increase in discharge ratio leads to strong variation of the water level near the separation zone.

DOI: https://doi.org/10.3850/iahr-hic2483430201-97

Year: 2024