Análisis de parámetros dimensionales en la aireación de chorros rectangulares turbulentos de vertido libre por coronación de presas.

Abstract

The objective of this document is to present a comparison between the results obtained in this case of study called "Analysis of dimensional parameters in the aeration of turbulent rectangular jets of free discharge by crowning dams", for which it was proposed a numerically simulate of biphasic flows in 2D and 3D with high concentrations of air in free discharge jets with CFD ANSYS FLUENT software. In accordance with this analysis, the study of the fall of the jet was proposed in a parametric of 1 to 2 meters and a width of 1.05 meters; Furthermore, in order to evaluate by means of numerical simulations, prior to the adjustment of parameters in the definition of the mesh, the biphasic properties (air + water) and define the appropriate turbulence model to solve the problem, speeds and the degree of dissipation of energy of the jet (through the verification of the volume fraction), since with the results it was achieved in a first instance, to understand the mechanisms of energy dissipation in jets and to support dam engineers with hydraulic design criteria , and later, a comparison was made with the laboratory results obtained in Ortega's (2022) doctoral work.