Abstract
Better understanding of the hydraulic performance of stormwater inlets which serve as the linkage between the surface drainage system and the underground sewer system is important to avoid urban flooding. Continuous transverse grates were not well studied in the literature, and, therefore, eight types of such grates commonly used in China were examined experimentally in this study. A full-scale physical model simulating a 12-m-long and 3-m-wide road was constructed for 320 hydraulic tests with different approaching flow rates and road longitudinal slopes. Hydraulic efficiencies of the grates under different conditions were calculated, and their influencing factors were analyzed, including the Froude number and the grate’s geometry (grate length, effective length, effective width, effective length ratio, effective width ratio, opening style, and opening rate). Empirical equations are presented to relate the hydraulic efficiency and influencing factors. This research is useful for understanding continuous transverse grates and improving the engineering design of the grates.
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Data Availability Statement
All data, models, and code generated or used in the study appear in the published article.
Acknowledgments
This work was financially supported by the National Science Foundation of Anhui Province (Grant No. 1908085QE211).
References
Bazin, P.-H., H. Nakagawa, K. Kawaike, A. Paquier, and E. Mignot. 2014. “Modeling flow exchanges between a street and an underground drainage pipe during urban floods.” J. Hydraul. Eng. 140 (10): 04014051. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000917.
Brown, S. A., J. D. Schall, J. L. Morris, C. L. Doherty, S. M. Stein, and J. C. Warner. 2009. Urban drainage design manual: Hydraulic engineering circular 22. Springfield, VA: US National Technical Information Service.
Comport, B. C., and C. I. Thornton. 2012. “Hydraulic efficiency of grate and curb inlets for urban storm drainage.” J. Hydraul. Eng. 138 (10): 878–884. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000552.
Despotovic, J., J. Plavsic, N. Stefanovic, and D. Pavlovic. 2005. “Inefficiency of storm water inlets as a source of urban floods.” Water Sci. Technol. 51 (2): 139–145. https://doi.org/10.2166/wst.2005.0041.
Djordjević, S., A. J. Saul, G. R. Tabor, J. Blanksby, I. Galambos, N. Sabtu, and G. Sailor. 2013. “Experimental and numerical investigation of interactions between above and below ground drainage systems.” Water Sci. Technol. 67 (3): 535–542. https://doi.org/10.2166/wst.2012.570.
Gómez, M., J. Recasens, B. Russo, and E. Martinez-Gomariz. 2016. “Assessment of inlet efficiency through a 3D simulation: Numerical and experimental comparison.” Water Sci. Technol. 74 (8): 1926–1935. https://doi.org/10.2166/wst.2016.326.
Gómez, M., and B. Russo. 2009. “Hydraulic efficiency of continuous transverse grates for paved areas.” J. Irrig. Drain. Eng. 135 (2): 225–230. https://doi.org/10.1061/(ASCE)0733-9437(2009)135:2(225).
Gómez, M., B. Russo, and J. Tellez-Alvarez. 2019. “Experimental investigation to estimate the discharge coefficient of a grate inlet under surcharge conditions.” Urban Water J. 16 (2): 85–91. https://doi.org/10.1080/1573062X.2019.1634107.
Guo, J. C. Y. 2006. “Design of street curb opening inlets using a decay-based clogging factor.” J. Hydraul. Eng. 132 (11): 1237–1241. https://doi.org/10.1061/(ASCE)0733-9429(2006)132:11(1237).
Guo, J. C. Y., K. A. MacKenzie, and A. Mommandi. 2009. “Design of street sump inlet.” J. Hydraul. Eng. 135 (11): 1000–1004. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000094.
Kemper, S., and A. Schlenkhoff. 2018. “Numerical simulation of intake structures like street inlets with supercritical flow conditions.” In Proc., 7th IAHR Int. Symp. on Hydraulic Structures. Aachen, Germany: International Association for Hydro-environment Engineering and Research.
Kemper, S., and A. Schlenkhoff. 2019. “Experimental study on the hydraulic capacity of grate inlets with supercritical surface flow conditions.” Water Sci. Technol. 79 (9): 1717–1726. https://doi.org/10.2166/wst.2019.171.
Li, X. N., X. Fang, G. Chen, Y. W. Gong, J. L. Wang, and J. Q. Li. 2019. “Evaluating curb inlet efficiency for urban drainage and road bioretention facilities.” Water 11 (4): 851. https://doi.org/10.3390/w11040851.
Lopes, P., J. Leandro, R. F. Carvalho, B. Russo, and M. Gómez. 2016. “Assessment of the ability of a volume of fluid model to reproduce the efficiency of a continuous transverse gully with grate.” J. Irrig. Drain. Eng. 142 (10): 04016039. https://doi.org/10.1061/(ASCE)IR.1943-4774.0001058.
Martins, R., J. Leandro, and R. F. de Carvalho. 2014. “Characterization of the hydraulic performance of a gully under drainage conditions.” Water Sci. Technol. 69 (12): 2423–2430. https://doi.org/10.2166/wst.2014.168.
Martins, R., M. Rubinato, G. Kesserwani, J. Leandro, S. Djordjevic, and J. D. Shucksmith. 2018. “On the characteristics of velocities fields in the vicinity of manhole inlet grates during flood events.” Water Resour. Res. 54 (9): 6408–6422. https://doi.org/10.1029/2018WR022782.
Nasello, C., and T. Tucciarelli. 2005. “Dual multilevel urban drainage model.” J. Hydraul. Eng. 131 (9): 748–754. https://doi.org/10.1061/(ASCE)0733-9429(2005)131:9(748).
Palla, A., M. Colli, A. Candela, G. T. Aronica, and L. G. Lanza. 2018. “Pluvial flooding in urban areas: The role of surface drainage efficiency.” J. Flood Risk Manage. 11 (52): S663–S676. https://doi.org/10.1111/jfr3.12246.
Ravazzani, G., A. Amengual, A. Ceppi, V. Homar, R. Romero, G. Lombardi, and M. Mancini. 2016. “Potentialities of ensemble strategies for flood forecasting over the Milano urban area.” J. Hydrol. 539 (Aug): 237–253. https://doi.org/10.1016/j.jhydrol.2016.05.023.
Rubinato, M., S. Lee, R. Martins, and J. D. Shucksmith. 2018. “Surface to sewer flow exchange through circular inlets during urban flood conditions.” J. Hydroinf. 20 (3): 564–576. https://doi.org/10.2166/hydro.2018.127.
Russo, B., and M. Gómez. 2011. “Methodology to estimate hydraulic efficiency of drain inlets.” Proc. Inst. Civ. Eng. Water Manage. 164 (2): 81–90. https://doi.org/10.1680/wama.900070.
Russo, B., M. Gómez, and J. Tellez. 2013. “Methodology to estimate the hydraulic efficiency of nontested continuous transverse grates.” J. Irrig. Drain. Eng. 139 (10): 864–871. https://doi.org/10.1061/(ASCE)IR.1943-4774.0000625.
Schalla, F. E., M. Ashraf, M. E. Barrett, and B. R. Hodges. 2017. “Limitations of traditional capacity equations for long curb inlets.” Transp. Res. Rec. 2638 (1): 97–103. https://doi.org/10.3141/2638-11.
Sezeñöz, B. 2014. “Numerical modelling of continuous transverse grates for hydraulic efficiency.” Master’s thesis, Dept. of Civil Engineering, Middle East Technical Univ.
Sipahi, S. Ö. 2006. “Calibration of a grate on a sloping channel.” Master’s thesis, Dept. of Civil Engineering, Middle East Technical Univ.
Tiğrek, Ş., and S. O. Sipahi. 2012. “Rehabilitation of storm water collection systems of urban environment using the small roads as conveyance channels.” Int. J. Environ. Sci. Technol. 9 (1): 95–103. https://doi.org/10.1007/s13762-011-0002-x.
Ünver, G. D. 2015. “Laboratory investigation of hydraulic efficiency of transverse grates in roads.” Master’s thesis, Dept. of Civil Engineering, Middle East Technical Univ.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 147 • Issue 9 • September 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Nov 2, 2020
Accepted: Mar 9, 2021
Published online: Jun 22, 2021
Published in print: Sep 1, 2021
Discussion open until: Nov 22, 2021
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