Modelación numérica para determinación de la eficiencia de los sumideros de aguas lluvias tipo T45 con modificación a rejillas circulares utilizado en elevación y depresión en la vía, aplicando mecánica de fluidos computacionales

Abstract

To begin with this research, a real-scale three-dimensional model was created with computational fluid dynamics software, which helps to carry out three-dimensional simulations of the behavior on the action of runoff water and analyze the results to make a comparison among the current established T45 type grating model and the ones used in the Standard Ecuadorian Vial NEVI-12. The virtual platforms conditions for the simulation were the same as those of the 1:4 scale investigation, therefore a transverse or pumping slope of 2 and 4 percent and longitudinal slopes of 0.5, 4 and 12 percent were used with income flows that vary from 16.91lt/s to 111.65lt/s. Several modifications were also considered in the placement of the grating, creating two scenarios depending on the placement on the road: S1 Model: a grating located in the elevation of the road, S2 Model: a grating located in depression on the road, as well as two scenarios depending on the number of gratings: an S1 scenario where a single grating is placed and an S2 scenario where 2 gratings are placed in series, the results showed that the S2 scenario with two gratings in series has a higher efficiency than S1, and there is a better efficiency with the modifications on the shape of the grating bearing bars.