Compound Channel’s Cross-section Shape Effects on the Kinetic Energy and Momentum Correction Coefficients

• Autorzy: Ghanbari-Adivi Elham

Identyfikatory

DOI

10.1515/heem-2020-0004

• Języki publikacji: EN

Abstrakty

EN

Since accurate estimation of the flow kinetic energy (α) and momentum (β) is not easily possible in compound channels, determining their accurate correction coefficients is an important task. This paper has used the “flood channel facility (FCF)” data and the “conveyance estimate system (CES)” model (which is 1D, but considers a term related to the secondary flow) to study how the floodplain width and the main channel wall slope and asymmetry affect the values of α and β. Results have shown that their maximum values at the highest floodplain width are, respectively, 1.36 and 1.13 times of those at the lowest case; an increase in the slope increased their maximum values by 1.05 and 1.01 times, respectively. The mean of error values showed that the CES model estimated the values α and β more accurately than the flow discharge. The maximum differences between the estimated and experimental values were 12.14% for α and 4.3% for β; for the flow discharge, it was 24.4%.

Słowa kluczowe

EN

CES model; compound channel; FCF; floodplain; kinetic energy correction coefficient; momentum correction coefficient

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2020
• Tom: Vol. 67, nr 1-4
• Strony: 55--71
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Ghanbari-Adivi Elham

• Assistant Professor, Department of Water Science Engineering, Shahrekord University, Shahrekord, Iran

Bibliografia

• Bousmar D. (2002) Flow modeling in compound channels, momentum transfer between main channel and prismatic or non-prismatic floodplains, Thesis presented for the degree of Doctor in Applied Sciences, Universities catholique de Louvain.
• Chow V. T. (1959) Open-channel hydraulics, [in:] Open-channel hydraulics, McGraw-Hill.
• Devi K., Khatua K. K. (2019) Discharge prediction in asymmetric compound channels, Journal of Hydro-environment Research, 23, 25–39.
• Devi K., Khuntia J. R., Khatua K. K. (2018) Depth-Averaged Velocity Distribution for Symmetric and Asymmetric Compound Channels, Proceedings of the International Conference on Microelectronics, Computing & Communication Systems, Springer, Singapore, 281–292.
• Ervine D. A., Babaeyan-Koopaei K., Sellin H. J. (2000) Two-dimensional Solution for Straight and Meandering Overbank Flows, Journal of Hydraulic Engineering, ASCE, 126 (9), 653–669.
• Fenton J. D. (2005) On the energy and momentum principles in hydraulics, Proc. 31st Congress IAHR, Seoul, 625–636.
• French R. H. (1987) Open-Channel Hydraulics, McGraw-Hill, Singapore, Second edition.
• Hamidifar H., Omid M. H. (2013) Floodplain vegetation contribution to velocity distribution in compound channels, Journal of Civil Engineering and Urbanism, 3 (6), 357–361.
• Henderon F. M. (1966) Open channel flow, Macmilan Publishing Co, New York, United States of America.
• Keshavarzi A., Hamidifar H. (2018) Kinetic energy and momentum correction coefficients in compound open channels, Natural Hazards, 92 (3), 1859–1869.
• Keshavarzi A. (1993) Investigation of energy and momentum coefficients in compound channels, M.Sc. thesis, University of New South Wales, Australia.
• Knight D. W., Shiono K., Pirt J. (1989) September. Prediction of depth mean velocity and discharge in natural rivers with overbank flow, Proceedings of the International Conference on Hydraulic and Environmental Modellling of Coastal, Estuarine and River Waters, Gower Publishing, 419–428.
• Kolupaila S. (1956) Methods of determination of the kinetic energy factor, The Port Engineer, Calcutta, India, 5 (1), 12–18.
• Li D., Hager W. H. (1991) Correction coefficients for uniform channel flow, Canadian Journal of Civil Engineering, 18 (1), 156–158.
• Mohanty P. K., Khatua K. K. (2014) Estimation of discharge and its distribution in compound channels, Journal of Hydrodynamics, 26 (1), 144–154.
• Mohanty P. K. (2013) Flow analysis of compound channels with wide flood plains Prabir (Doctoral dissertation).
• Mohanty P. K., Dash S. S., Khatua K. K., Patra K. C. (2012) Energy and momentum coefficients for wide compound channels, River Basin Management, VII, 172, 87.
• Moreta P. J. M., Lopez-Querol M. S. (2017) Numerical Modeling in Flood Risk Assessment: UK Case Study, Civil Engineering Research Journal, 3 (1), DOI: 10.19080/CERJ.2017.03.555601.
• Nagy J., Kiss T., Feh´erv´ary I., Vaszkó C. (2018) Changes in Floodplain Vegetation Density and the Impact of Invasive Amorpha fruticosa on Flood Conveyance, Journal of Environmental Geography, 11 (3–4), 3–12.
• Parsaie A. (2016) Analyzing the distribution of momentum and energy coefficients in compound open channel, Modeling Earth Systems and Environment, 2 (1), 15.
• Seckin G., C¸ a˘gatay H., C¸ obaner M., Yurtal R. (2009a) Experimental investigation of kinetic energy and momentum correction coefficients in open channels, Scientific Research and Essay, 4 (5), 473–478.
• Seckin G., Mamak M., Atabay S., Omran M. (2009b) Discharge estimation in compound channels with fixed and mobile bed, Sadhana, 34 (6), 923–945. , La Houille Blanche, (7), 793–802.
• Shiono K., Knight D.W. (1988) Two-dimensional analytical solution for a compound channel, Proceedings of the 3rd international symposium on refined flow modeling and turbulence measurements, Proc. 3rd Int. Symp. on refined flow modeling and turbulence measurements, 503–510.
• Shiono K., Knight D. W. (1990) Mathematical models of flow in two or multi stage straight channels, Proc. Int. Conf. on River Flood Hydraulics, Wiley New York, 229–238.
• Shiono K., Knight D. W. (1991) Turbulent open-channel flows with variable depth across the channel, Journal of Fluid Mechanics, 222, 617–646.
• Singh P. K. Banerjee S. Naik B., Kumar A., Khatua K. K. (2018) Lateral distribution of depth average velocity & boundary shear stress in a gravel bed open channel flow, ISH Journal of Hydraulic Engineering, 1–15.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).