Assessment of inlet efficiency through a 3D simulation: numerical and experimental comparison

Inlet efficiency is a requirement for characterizing the flow transfers between surface and sewer flow during rain events. The dual drainage approach is based on the joint analysis of both upper and lower drainage levels, and the flow transfer is one of the relevant elements to define properly this...

Full description

Saved in:
Bibliographic Details
Published in:Water science and technology 2016-10, Vol.74 (8), p.1926-1935
Main Authors: Gómez, Manuel, Recasens, Joan, Russo, Beniamino, Martínez-Gomariz, Eduardo
Format: Article
Language:English
Subjects:
3D modelling
Computational fluid dynamics
Computer simulation
Drainage
dual drainage
Educational institutions
Efficiency
Enginyeria civil
Enginyeria hidràulica, marítima i sanitària
Enginyeria sanitària
Escolament urbà
Experiments
Floods
Flow pattern
Fluid flow
Geometry
Hydraulic performance
Hydraulics
Hydrology
inlet efficiency
inlet testing
Inlets (waterways)
Interception
Laboratories
Mathematical models
Models matemàtics
Models, Theoretical
Parameter estimation
Rain
Runoff
Spain
Stormwater management
Streets
Surcharges
surface flow
Tests
Three dimensional flow
Three dimensional models
Turbulence models
urban floods
Urban Runoff
Water Movements
Àrees temàtiques de la UPC
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Inlet efficiency is a requirement for characterizing the flow transfers between surface and sewer flow during rain events. The dual drainage approach is based on the joint analysis of both upper and lower drainage levels, and the flow transfer is one of the relevant elements to define properly this joint behaviour. This paper presents the results of an experimental and numerical investigation about the inlet efficiency definition. A full scale (1:1) test platform located in the Technical University of Catalonia (UPC) reproduces both the runoff process in streets and the water entering the inlet. Data from tests performed on this platform allow the inlet efficiency to be estimated as a function of significant hydraulic and geometrical parameters. A reproduction of these tests through a numerical three-dimensional code (Flow-3D) has been carried out simulating this type of flow by solving the RANS equations. The aim of the work was to reproduce the hydraulic performance of a previously tested grated inlet under several flow and geometric conditions using Flow-3D as a virtual laboratory. This will allow inlet efficiencies to be obtained without previous experimental tests. Moreover, the 3D model allows a better understanding of the hydraulics of the flow interception and the flow patterns approaching the inlet.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2016.326