Performance Study of Fluent-2D and Flow-3D Platforms in the CFD Modeling of a Flow Pattern Over Ogee Spillway

Rajaa, Ahmed Imad; Kamela, Ammar Hatem

doi:10.37649/aengs.2020.171262

Performance Study of Fluent-2D and Flow-3D Platforms in the CFD Modeling of a Flow Pattern Over Ogee Spillway

Ahmed Imad Rajaa

Ammar Hatem Kamela

Anbar Journal of Engineering Sciences, 2020, Volume 11, Issue 2, Pages 221-230
10.37649/aengs.2020.171262

Abstract

Recently, the investigations studies of simulating flow over spillways have increased using numerical models. Due to its important structure in the dams to pass flood wave to the downstream safely. Researches finding have shown that CFD (Computational fluid dynamics) models as the numerical method are a perfect alternative for laboratory tests. Performance analysis of the CFD platforms Ansys Fluent-2D and Flow-3D are presented, focus on finding the variations between the numerical results of the two programs to simulate the flow over ogee spillway. The present study treats the turbulence using RNG k-ε of RANS approach, and also use the Volume of Fluid (VOF) algorithm to track the water-air interaction. The Fluent-2D and Flow-3D accuracy are assessed by comparing representative flows variables (velocity; free surface profiles; pressure; and the turbulent kinetic energy). The results of both codes have been also compared with experimental data. The results of the analysis show an excellent agreement between the two platforms data, which could assist in the future by using both programs to calibrate each other, rather than traditionally relying on laboratory calibration models.

Keywords:

Spillway Numerical model Physical model Flow-3D Ansys Fluent Flow simulate

Main Subjects:

Dams and Water Resources Engineering

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