Assessment of the Ability of a Volume of Fluid Model to Reproduce the Efficiency of a Continuous Transverse Gully with Grate

Lopes, Pedro; Leandro, Jorge; Carvalho, Rita F.; Russo, Beniamino; Valentín, Manuel Gómez

doi:10.1061/(asce)ir.1943-4774.0001058

Cited by 28 publications

(10 citation statements)

References 21 publications

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“…Studies on linkage systems are usually focused on experimental facilities with emphasis on the efficiency (Bock et al, ; Gómez & Russo, ; Gómez & Russo, ; Li, Geyer, et al, ; Li, Sorteberg, et al, ; Li et al, , ; Martins et al, ; Russo et al, ) or the use of fully 3‐D CFD models to study the characteristics of the flow inside the manhole (Djordjevic et al, ; Leandro et al, ; Lopes et al, , ). Studies that verify the applicability of 2‐D models to directly reproduce drainage flows and flow conditions close to the linkage structure on the floodplain during flood events are however scarce (Martins, Kesserwani, et al, ; Rubinato et al, ), and proper validation is usually focused on the bed elevation (Cea et al, ) far from the interface structures.…”

Section: Introductionmentioning

confidence: 99%

“…Gómez and Russo (, , , ) performed a series of tests mainly to check the efficiency of inlets, based on experimental data. Russo et al () and Lopes et al () analyzed experimentally and numerically the efficiency of several continuous transverse grates reaching the conclusion that a 3‐D VOF model can effectively replicate the efficiency of a grate.…”

Section: Introductionmentioning

confidence: 99%

“…Gómez and Russo (2005, 2007, 2011 performed a series of tests mainly to check the efficiency of inlets, based on experimental data. Russo et al (2013) and Lopes et al (2016) analyzed experimentally and numerically the efficiency of several continuous transverse grates reaching the conclusion that a 3-D VOF model can effectively replicate the efficiency of a grate. Djordjevic et al (2013) performed a study on the surface and subsurface interaction presenting results for drainage and surcharge of a grated gully with transversal voids.…”

Section: Introductionmentioning

confidence: 99%

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On the Characteristics of Velocities Fields in the Vicinity of Manhole Inlet Grates During Flood Events

Martins

Rubinato

Kesserwani

et al. 2018

Water Resources Research

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The accurate characterization of flow from urban surfaces to sewer/stormwater systems is important for urban drainage design and flood modeling/risk identification. However, the geometrical complexity and large variety of drainage structures (linking elements) available makes model calibration and verification difficult. In this study an extensive comparison between experimentally measured and numerically modeled flow characteristics in the vicinity of ten different designs of manhole grate was performed under drainage flow in subcritical conditions. Using a 2‐D surface PIV (sPIV) system the work presents the first detailed characterization of velocity fields around these linking elements. In addition, it provides the first detailed verification of the ability of a 2‐D numerical model to describe both velocity fields and drainage flows. The overall comparison shows a close relationship between numerical and the experimental results with some higher inflows in the experimental results as a consequence of a localized transition from weir to orifice condition near the void areas of the grates. It was also noted that velocity differences decreased further from the manhole, due mainly to the more directional flow. Overall the work demonstrates the potential for further use of 2‐D numerical models to describe flow conditions at linking elements, either directly within modeling simulations or indirectly via the characterization of energy loss coefficients.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the Characteristics of Velocities Fields in the Vicinity of Manhole Inlet Grates During Flood Events

Martins

Rubinato

Kesserwani

et al. 2018

Water Resources Research

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“…It has been found that the hydraulic behaviour of stormwater inlet is complex to be understood [12,21]. Due to this, experimental and numerical research work on stormwater inlet mainly investigating on inlet performance and efficiency have been conducted [3,11,12,19,20,26,28,29]. Based on previous research, it can be concluded that the hydraulic performance of stormwater inlet could be improved by either increasing the inlet spacing or number of inlets.…”

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confidence: 99%

Infiltration Rate of Pervious Concrete on Street Curb Application

2019

ijrte

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The street curb and stormwater inlets are among the component often found on the road which serve as part of the urban stormwater drainage system. They act as a stormwater removal and discharge it into the underground drainage system. However, the current stormwater inlet practiced in Malaysia has limitations which often cause water ponding and consequently lead to road flooding. Rather than improving the performance of stormwater inlet, the flow interception and rate of stormwater removal may be enhanced by introducing a new technology called the pervious curb. It isto be made of pervious concrete which provide an ability to allow water to pass through it.This paper attempts to adapt the existingtwo pervious concrete mix design and applied it into the so-called pervious curb. Herein, a newly designed infiltration rate test was used to test the pervious concrete performance under the effect of infiltration through side surface of the concrete curb. While doing so, the infiltration rate of the pervious concrete will be investigated under varying slopes. Results showed that the infiltration rate is quite high and the rate of infiltration increases as the inclination gutter increases. Thus, it is proven that the new infiltration rate test is applicable and can be used for other similar applications. Furthermore, the test has significantly revealed that the pervious concrete has high potential in enhancing flow interception and able to reduce water ponding as a street curb.

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“…They compared water depths, streamlines, velocities, pressures and the inlet discharge coefficients at different outlet sizes and positions. Gómez and Russo (2009) and Lopes et al (2016) described flow efficiency of transverse gully grate using experimental and CFD models respectively. Although the main task of a gully is to drain surface flow to the underground system, the opposite directional flow may occur due to any exceptional event when gully becomes pressurised and surcharged water flood the surface area.…”

Section: Introductionmentioning

confidence: 99%

Effect of surcharge on gully-manhole flow

Beg

Carvalho

Leandro

2018

Journal of Hydro-environment Research

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In an urban drainage system, surface system and buried system are connected through several linking elements like gullies and manholes. To model an urban flood through a 1D or 2D routing model, proper representation of these linking elements is mandatory. This paper focuses on the effects on inline manhole head loss coefficient and gully flow due to change in manhole surcharges to get knowledge of their characteristics, flow patterns and influence in the overall flow. The solver interFoam with VOF capability under open source CFD toolbox OpenFOAM® is used for the numerical simulations. The CFD model created is a real scale model following the experimental setup installed at the University of Coimbra. The CFD model results were compared with discharge and water depth data at the manhole and velocity data at the gully, measured from the physical model. The manhole head loss coefficient was found very high at low surcharge level and reaching a constant value of 0.3 for higher surcharge levels. The gully flow was found to follow typical orifice flow equation with different discharge coefficients for different water depth conditions of the manhole. Three different surcharged zones were identified at the manhole on which discharge coefficients are dependent. The shear stress pattern at the manhole floor is also found varying due to surcharge depth as well as the gully flow. The variation showed distinctive configuration at different surcharge zones.

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Assessment of the Ability of a Volume of Fluid Model to Reproduce the Efficiency of a Continuous Transverse Gully with Grate

Cited by 28 publications

References 21 publications

On the Characteristics of Velocities Fields in the Vicinity of Manhole Inlet Grates During Flood Events

On the Characteristics of Velocities Fields in the Vicinity of Manhole Inlet Grates During Flood Events

Infiltration Rate of Pervious Concrete on Street Curb Application

Effect of surcharge on gully-manhole flow

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