Simulation of flow velocity variations in the Cai Khe Channel during sluice gate operation
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Abstract
The three-dimensional hydraulic model Flow-3D was used to simulate the flow velocity in the Cai Khe channel when operating the gates of the Cai Khe barrier. Primary and secondary data were collected to build, calibrate, and validate the model. The NSE coefficient for calibration and validation cases were 0.74 and 0.61, respectively, indicating the reliability of the model. The case of operating the gate to discharge pollutants and create a unidirectional flow with a water level difference between the field and the river of 1.54 meters was chosen to check for potential erosion. The simulation results showed that at profiles 1 and 2 (located 10 meters and 60 meters from the center of the sluice towards the river, respectively), the average flow velocities were 2.97 m/s and 4.99 m/s, respectively, which are greater than the allowable non-erosive velocity (vx = 0.19 – 0.26 m/s). Therefore, the riverbed needs to be reinforced to prevent erosion when operating the sluice gates.
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References
Akan, A. O., & Iyer, S. S. (2021). Open channel hydraulics. Butterworth-Heinemann.
Chinh, D. T., Dung, N. V., Gain, A. K., & Kreibich, H. (2017). Flood Loss Models and Risk Analysis for Private Households in Can Tho City, Vietnam. Water, 9(5), 313. https://www.mdpi.com/2073-4441/9/5/313
Cuong, P. H. (2020). Report of construction design drawings (Contract Package: TV3-CT17: Consulting for survey and design of Cai Khe-Hang Bang ship lock, Can Tho City.
Daneshfaraz, R., Ghahramanzadeh, A., Ghaderi, A., Joudi, A. R., & Abraham, J. (2016). Investigation of the effect of edge shape on characteristics of flow under vertical gates. Journal‐American Water Works Association, 108(8), E425-E432.
Habibi, K., Fard, F. E., & Pari, S. A. A. (2023, 8-9 November 2023). Investigation of the flow field around bridge piers on a non-eroding bed using FLOW-3D. 22nd Iranian Conference on Hydraulics University of Maragheh, Maragheh, Iran.
Ho, B. Q., Nguyen, K. D., Vu, K. H. N., Nguyen, T. T., Nguyen, H. T. T., Ngo, D. D. N., Tran, H. T. H., Le, P. H., Nguyen, Q. H., Ngo, Q. X., Huynh, N. T. T., & Nguyen, H. D. (2022). Apply MIKE 11 model to study impacts of climate change on water resources and develop adaptation plan in the Mekong Delta, Vietnam: a case of Can Tho city. Environmental Monitoring and Assessment, 194(2), 765. https://doi.org/10.1007/s10661-022-10185-7
Huong, H. T. L., Assela, P., & Thuc, T. (2012). Facing multiple challenges: the future of flooding in Can Tho city. VNU Journal of Science: Earth and Environmental Sciences, 28(2). https://js.vnu.edu.vn/EES/article/view/1158
Huong, H. T. L., & Pathirana, A. (2013). Urbanization and climate change impacts on future urban flooding in Can Tho city, Vietnam. Hydrol. Earth Syst. Sci., 17(1), 379-394. https://doi.org/10.5194/hess-17-379-2013
Kixelep, P. G. A. A. D., Danhitsenko, N. V., Kaxpaxon, A. A., Griptsenko, G. I., Paskop, N. N., Xlixki, X. M. (2008). Hydraulic Calculations Handbook. Construction Publishing House.
Minh Hoa, T. T., & Khanh Linh, C. (2020). Tourism and Environmental Security in Mekong Delta (Case Study in Can Tho City). VNU Journal of Science: Policy and Management Studies, 36(4). https://doi.org/10.25073/2588-1116/vnupam.4273
MOST. (2014). TCVN 4198:2014 Soils – Laboratory methods for particle - size analysis.
Nash, J. E., & Sutcliffe, J. V. (1970). River flow forecasting through conceptual models part I — A discussion of principles. Journal of Hydrology, 10(3), 282-290. https://doi.org/https://doi.org/10.1016/0022-1694(70)90255-6
Pholkern, K., Srisuk, K., Grischek, T., Soares, M., Schäfer, S., Archwichai, L., Saraphirom, P., Pavelic, P., & Wirojanagud, W. (2015). Riverbed clogging experiments at potential river bank filtration sites along the Ping River, Chiang Mai, Thailand. Environmental Earth Sciences, 73(12), 7699-7709. https://doi.org/10.1007/s12665-015-4160-x
TLU. (2021). TCVN 4118 : 2021 Hydraulic structures – Water conveyance system – Requirements for design.
Vietz, G. J., Lintern, A., Webb, J. A., & Straccione, D. (2018). River Bank Erosion and the Influence of Environmental Flow Management. Environmental Management, 61(3), 454-468. https://doi.org/10.1007/s00267-017-0857-9
Zuo, Q., Chen, H., Dou, M., Zhang, Y., & Li, D. (2015). Experimental analysis of the impact of sluice regulation on water quality in the highly polluted Huai River Basin, China. Environmental Monitoring and Assessment, 187(7), 450. https://doi.org/10.1007/s10661-015-4642-z