Research Information System
Urban Water Journal, vol.23, no.4, pp.630-643, 2026 (SCI-Expanded, Scopus)
In this study, stormwater inlets were experimentally investigated under varying approach flow rates to determine the corresponding interception efficiencies. All laboratory tests were conducted under subcritical flow conditions with the Froude number, Reynolds number, and the total flow rate ranges of 0.3 < Fr <0.6, 1700 < Re <5750, and 1 L/s < Qt <5.5 L/s, respectively. Based on the collected experimental data, multivariate data analysis was performed and a non-dimensional equation was proposed to estimate the hydraulic efficiencies of continuous transverse grates. The experimental results revealed a strong correlation between the hydraulic efficiency and the total approach flow rate for all tested inlets,where the efficiencies displayed an increasing tendency up to a certain limit. Moreover, positioning the isolated side grates at a distance with a zig-zag pattern was found to be hydraulically more efficient than implementing the grates at both sides of the channel.