Estudio numérico de la hidrodinámica local y estudio de la influencia de parámetros relevantes: forma y orientación de alambres en rejillas de efecto Coanda

Abstract

The study and analysis of the influence of parametric variation on Coanda Effect Screen, trough Computational Fluid Dynamics techniques are presented. As a basis for the delimitation of the geometric domain, as well as for the subsequent calibration process, data were taken from one of the research developed by Tony Wahl for the Bureau of Reclamation. To generate the meshing and the simulation the free access tools SALOME and OpenFOAM were used. The turbulence computational model used was the k-ω SST. The results shows that the flow rate intercepted by the screen increases 32.34% by incorporating a curvature in the upper part of the wires. Furthermore, it was determined that when increasing the angle of attack, in the range of 11º to 15º, there is an increase in the interception of flow, however, the values of intercepted flow, for each angle of the range, are very similar to each other. On the other hand, the flow rates corresponding to the variation of the angle of attack in the range of 7º to 9º do not show significant increases or decreases.