Retrofitting of a Rainfall Simulator to Evaluate Hydrologic Output of SUDS

Arone J.; Torres O.B.; Arancibia A.L.; Kuroiwa J.M. · International Low Impact Development Conference 2023: Adaptation and Resilience for a Changing World - Proceedings of the International Low Impact Development Conference 2023 (2023) · DOI: 10.1061/9780784485002.020

Resumen

The objective of this study is to adapt a rainfall simulator that allows controlling input of different rain intensities to later evaluate the hydrological response of SUDS (sustainable urban drainage systems) through output hydrographs. A rain simulator was built at the National Hydraulics Laboratory-UNI. The simulator consists of a 1 HP pump that drives water through a 3/4 in. piping system, towards a system of 6 FullJet 1/4HH-14WSQ sprinklers distributed symmetrically. The rain catchment area is approximately 18 m2 with a variable slope from 0% to 50%. Through calibration tests, it was proven that the rain simulator can produce rainfall intensities of 59.4 to 74.6 mm/h with errors of 0.1 to 1%. The coefficient of uniformity of the intensities was from 69 to 71% with an average droplet diameter of 2.30 to 2.52 mm. According to the results of the parameters of coefficient of uniformity and droplet size, the rain simulator has been properly calibrated. © ASCE.

Instituciones: Universidad Nacional de Ingeniería