Three-Dimensional Numerical Modeling of Urban Green Stormwater Infrastructure Curb InletsSource: Journal of Irrigation and Drainage Engineering:;2021:;Volume ( 147 ):;issue: 009::page 04021039-1Author:Richard Ampomah
,
Hossein Hosseiny
,
Sarah Stoolmiller
,
Madhat Fares
,
Virginia Smith
,
Bridget Wadzuk
DOI: 10.1061/(ASCE)IR.1943-4774.0001589Publisher: ASCE
Abstract: The current equations for curb inlet opening sizing often inaccurately estimate the capture efficiency of small urban green stormwater infrastructure (GSI) curb inlets. Most of these equations are based on studies with openings much larger than typical urban GSI curb inlets (i.e., less than 0.6 m). This study introduces a new, three-dimensional (3D) numerical approach for evaluating curb efficiency using the ANSYS Fluent computational fluid dynamics (CFD) model that can be applied to a wide range of curb inlet conditions. Simulated curb efficiency results for typical urban curb inlet openings are verified by laboratory experiments of field-scale conditions. A high prediction accuracy is obtained (Nash-Sutcliffe efficiency coefficient=0.97) between the observed and the CFD model results. The CFD model also performs better than three commonly used methods for estimating curb inlet efficiency; the Hydraulic Engineering Circular No. 22, and the 2009 and 2012 Comport and Thornton equations. The high level of accuracy observed in this study makes 3D CFD modeling a more effective alternative to existing equations for evaluating GSI curb inlet efficiency. The quick simulation times realized in this study also demonstrate that CFD modeling of GSI inlets has an added benefit of quickly evaluating several design alternatives without a need for costly full-scale or on-site testing often performed to assess such inlets.
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contributor author | Richard Ampomah | |
contributor author | Hossein Hosseiny | |
contributor author | Sarah Stoolmiller | |
contributor author | Madhat Fares | |
contributor author | Virginia Smith | |
contributor author | Bridget Wadzuk | |
date accessioned | 2022-02-01T21:58:08Z | |
date available | 2022-02-01T21:58:08Z | |
date issued | 9/1/2021 | |
identifier other | %28ASCE%29IR.1943-4774.0001589.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4272385 | |
description abstract | The current equations for curb inlet opening sizing often inaccurately estimate the capture efficiency of small urban green stormwater infrastructure (GSI) curb inlets. Most of these equations are based on studies with openings much larger than typical urban GSI curb inlets (i.e., less than 0.6 m). This study introduces a new, three-dimensional (3D) numerical approach for evaluating curb efficiency using the ANSYS Fluent computational fluid dynamics (CFD) model that can be applied to a wide range of curb inlet conditions. Simulated curb efficiency results for typical urban curb inlet openings are verified by laboratory experiments of field-scale conditions. A high prediction accuracy is obtained (Nash-Sutcliffe efficiency coefficient=0.97) between the observed and the CFD model results. The CFD model also performs better than three commonly used methods for estimating curb inlet efficiency; the Hydraulic Engineering Circular No. 22, and the 2009 and 2012 Comport and Thornton equations. The high level of accuracy observed in this study makes 3D CFD modeling a more effective alternative to existing equations for evaluating GSI curb inlet efficiency. The quick simulation times realized in this study also demonstrate that CFD modeling of GSI inlets has an added benefit of quickly evaluating several design alternatives without a need for costly full-scale or on-site testing often performed to assess such inlets. | |
publisher | ASCE | |
title | Three-Dimensional Numerical Modeling of Urban Green Stormwater Infrastructure Curb Inlets | |
type | Journal Paper | |
journal volume | 147 | |
journal issue | 9 | |
journal title | Journal of Irrigation and Drainage Engineering | |
identifier doi | 10.1061/(ASCE)IR.1943-4774.0001589 | |
journal fristpage | 04021039-1 | |
journal lastpage | 04021039-8 | |
page | 8 | |
tree | Journal of Irrigation and Drainage Engineering:;2021:;Volume ( 147 ):;issue: 009 | |
contenttype | Fulltext |