Interception efficiency of grate inlets for sustainable urban drainage systems design under different road slopes and approaching discharges

Dai, Shubing; Jin, Shaohua; Cheng, Qiuming; Yang, Nathan; Ma, Yulei; Liang, Chao

doi:10.1080/1573062x.2021.1925702

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…In addition, even in cases where the sewer network is known in detail, comprehensive data on inlet locations are often missing or incomplete [145]. For this reason, many studies have focused on the numerical and experimental hydraulic characterization of drain inlets [150][151][152][153][154][155][156][157][158][159], as well as on the sensitivity of model results to the physical characteristics and location of inlets [97,145]. Inlet clogging due to a lack of maintenance and clearance has also been recognized as a major problem, indeed, one that can cause more flooding incidents than storm-sewer overloading does, especially in flat urban areas, leading to local flooding before the designed hydraulic capacity of the sewer network is reached [102,144,160].…”

Section: Evaluation Of Pluvial-flood Risk In Urban Areasmentioning

confidence: 99%

Flood Risk in Urban Areas: Modelling, Management and Adaptation to Climate Change. A Review

2022

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The modelling and management of flood risk in urban areas are increasingly recognized as global challenges. The complexity of these issues is a consequence of the existence of several distinct sources of risk, including not only fluvial, tidal and coastal flooding, but also exposure to urban runoff and local drainage failure, and the various management strategies that can be proposed. The high degree of vulnerability that characterizes such areas is expected to increase in the future due to the effects of climate change, the growth of the population living in cities, and urban densification. An increasing awareness of the socio-economic losses and environmental impact of urban flooding is clearly reflected in the recent expansion of the number of studies related to the modelling and management of urban flooding, sometimes within the framework of adaptation to climate change. The goal of the current paper is to provide a general review of the recent advances in flood-risk modelling and management, while also exploring future perspectives in these fields of research.

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Section: Evaluation Of Pluvial-flood Risk In Urban Areasmentioning

confidence: 99%

Flood Risk in Urban Areas: Modelling, Management and Adaptation to Climate Change. A Review

2022

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“…The use of kerbs was first discovered in the city of Pompeii, Italy, which was buried under volcanic ash and pumice in the eruption of Mount Vesuvius in AD 79 [1,2]. The main functions of kerb are to provide structural support to the edges of the roads [3] and channel rainwater away [4][5][6][7][8][9][10][11][12][13]. By providing effective drainage, it can reduce cracking and other surface and structural defects and effectively increase the service life of a pavement.…”

Section: Introductionmentioning

confidence: 99%

A Review of Current Design and Construction Practice for Road Kerbs and a Sustainability Analysis

et al. 2022

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Kerb is an integral part of road infrastructure and performs several important functions, including providing stability to the edges of the road and providing effective drainage. Their performance can significantly influence the behaviour and service life of a road. The design conditions, construction materials and their sustainability can be important to assess from an asset management and sustainable construction point of view even though this area has been paid limited research attention in the past. This paper reviews the available literature on the design and construction considerations for kerbs and critically analyses them with a special focus on sustainable construction practice. The different materials commonly used around the world for the construction of kerb in terms of their properties, failure and available design guidelines have been discussed along with their management practice. Special situations, such as expansive soil movement and tree root-related problems, have also been considered, and the current guidelines for designing in such situations have also been discussed. A carbon footprint and sustainability analysis has been conducted on the current practice of using natural aggregate concrete and compared against several potential alternatives. The review of the design process indicated that the current practice relies on over-simplified design procedures and identified scopes for improvement, especially with the incorporation of mechanical behaviour of the material being used in construction. The carbon footprint and sustainability analysis indicated that the use of alternative materials could result in significant savings in the kerb construction industry’s carbon footprint.

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“…"Dual drainage" models were introduced, instigating the initial attempt of simulating the interactions between the surface and subsurface models [24][25][26]. The term "dual drainage" was used in Djordjevic et al [27] in reference to bi-directional flow between the overland and underground systems [28][29][30]. A challenge of these models is simulating the possible characteristics of flow between two sections, as the formulations on which these are based are still uncertain [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Approaches to Estimate Discharge Coefficients and Energy Loss Coefficients in Pressurized Grated Inlets

et al. 2021

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Numerical models concerning inlet systems are run to assess the hydraulic performance of existing or new systems and estimate the flow interchanges between the surface overland and sewer flows. In most programs, these interactions are modelled using the orifice equation, with estimated discharge coefficients around 0.6. In this paper, discharge values and energy loss coefficients for several pressurized grated inlets were obtained by experimental and numerical approaches and compared. To achieve these goals, a numerical model replicating several experimental tests carried out at the hydraulic laboratory of Universitat Politècnica de Catalunya (UPC) was produced using a CFD model (Flow 3D). This numerical model was found to be highly sensitive to the mesh size used; however, it was able to accurately simulate the experimental processes. The comparison considered different combinations of pressurized flow though the grate, between 10 to 50 l/s, and different longitudinal gradients. The experimental discharge coefficient was found to increase with surcharging flowrate (ranging from 0.14 and 0.41), whereas the longitudinal gradient was found to have no effect. The discharge coefficients obtained in this study show that the standard 0.6 value commonly used by practitioners should be revised to a range between 0.14 to 0.41, depending on circulating flow and inlet type. In addition, the loss coefficient values range from 0.25 to 3.41.

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Interception efficiency of grate inlets for sustainable urban drainage systems design under different road slopes and approaching discharges

Cited by 8 publications

References 26 publications

Flood Risk in Urban Areas: Modelling, Management and Adaptation to Climate Change. A Review

Flood Risk in Urban Areas: Modelling, Management and Adaptation to Climate Change. A Review

A Review of Current Design and Construction Practice for Road Kerbs and a Sustainability Analysis

Numerical and Experimental Approaches to Estimate Discharge Coefficients and Energy Loss Coefficients in Pressurized Grated Inlets

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