Abstract
Submerged spillways with large capacity outlets are generally provided below the dam crest to perform the dual functions of flood disposal and sediment flushing. Flood water passing through these spillways exhibits turbulent behavior. Moreover; hydraulic analysis of such turbulent flows is a challenging task. Therefore, the present study aims to use numerical simulations to examine the hydraulic behavior of submerged spillways constructed at Mangla Dam, Pakistan. Besides, the hydraulic performance of aerator was also evaluated at different operating conditions. Computational fluid dynamics code FLOW 3D was used to numerically model the flows of Mangla Spillway. Reynolds-averaged Navier–Stokes equations are used in FLOW 3D to numerically model the turbulent flows. The study results indicated that the developed model can simulate the submerged spillway flows as it computed the flow parameters with an acceptable error of up to 6%. Moreover, air concentration computed by model near spillway chute bed was 3% which raised to more than 6% after the installation of ramp on aerator which showed that developed model is also capable of evaluating the performance of submerged spillway aerator.
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The data used to support the findings of this study are available from the corresponding author upon reasonable request.
References
Aydin MC (2018) Aeration efficiency of bottom-inlet aerators for spillways. ISH J Hydraul Eng 24(3):330–336. https://doi.org/10.1080/09715010.2017.1381576
Bennett P, Chesterton J, Neeve D, Ucuncu M, Wearing M, Jones SEL (2018) Use of CFD for modelling spillway performance. Dams Reserv 28(2):62–72. https://doi.org/10.1680/jdare.18.00001
Bhosekar VV, Jothiprakash V, Deolalikar PB (2012) Orifice Spillway Aerator: Hydraulic Design. J Hydraul Eng 138(6):563–572. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000548
Chanel PG, Doering JC (2008) Assessment of spillway modeling using computational fluid dynamics. Can J Civ Eng 35(12):1481–1485. https://doi.org/10.1139/L08-094
Flow Sciences, Inc. (2013) FLOW 3D user manual version 10.1.
Gadge PP, Jothiprakash V, Bhosekar VV (2018) Hydraulic investigation and design of roof profile of an orifice spillway using experimental and numerical models. J Appl Water Eng Res 6(2):85–94. https://doi.org/10.1080/23249676.2016.1214627
Gadge PP, Jothiprakash V, Bhosekar VV (2019) Hydraulic design considerations for orifice spillways. ISH J Hydraul Eng 25(1):12–18. https://doi.org/10.1080/09715010.2018.1423579
Gu S, Ren L, Wang X, Xie H, Huang Y, Wei J, Shao S (2017) SPHysics simulation of experimental spillway hydraulics. Water 9(12):973. https://doi.org/10.3390/w9120973
Gurav NV (2015) Physical and Numerical Modeling of an Orifice Spillway. Int J Mech Prod Eng 3(10):71–75
Hirt CW, Nichols BD (1981) Volume of fluid (VOF) method for the dynamics of free boundaries. J Comput Phys 39(1):201–225. https://doi.org/10.1016/0021-9991(81)90145-5
Ho DKH, Riddette KM (2010) Application of computational fluid dynamics to evaluate hydraulic performance of spillways in Australia. Aust J Civ Eng 6(1):81–104. https://doi.org/10.1080/14488353.2010.11463946
Jothiprakash V, Bhosekar VV, Deolalikar PB (2015) Flow characteristics of orifice spillway aerator: numerical model studies. ISH J Hydraul Eng 21(2):216–230. https://doi.org/10.1080/09715010.2015.1007093
Kumcu SY (2017) Investigation of flow over spillway modeling and comparison between experimental data and CFD analysis. KSCE J Civ Eng 21(3):994–1003. https://doi.org/10.1007/s12205-016-1257-z
Lian J, Qi C, Liu F, Gou W, Pan S, Ouyang Q (2017) Air entrainment and air demand in the spillway tunnel at the Jinping-I Dam. Appl Sci 7(9):930. https://doi.org/10.3390/app7090930
Luo M, Khayyer A, Lin P (2021) Particle methods in ocean and coastal engineering. Appl Ocean Res 114:102734
Moreira A, Leroy A, Violeau D, Taveira-Pinto F (2019) Dam spillways and the SPH method: two case studies in Portugal. J Appl Water Eng Res 7(3):228–245. https://doi.org/10.1080/23249676.2019.1611496
Moreira AB, Leroy A, Violeau D, Taveira-Pinto FA (2020) Overview of large-scale smoothed particle hydrodynamics modeling of dam hydraulics. J Hydraul Eng 146(2):03119001. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001658
O’Connor J, Rogers BD (2021) A fluid–structure interaction model for free-surface flows and flexible structures using smoothed particle hydrodynamics on a GPU. J Fluids Struct. https://doi.org/10.1016/j.jfluidstructs.2021.103312
Sarwar MK, Bhatti MT, Khan NM (2016) Evaluation of air vents and ramp angles on the performance of orifice spillway aerators. J Eng Appl Sci 35(1):85–93
Sarwar MK, Ahmad I, Chaudary ZA, Mughal H-U-R (2020) Experimental and numerical studies on orifice spillway aerator of Bunji Dam. J Chin Inst Eng 43(1):27–36. https://doi.org/10.1080/02533839.2019.1676652
Saunders K, Prakash M, Cleary PW, Cordell M (2014) Application of smoothed particle hydrodynamics for modelling gated spillway flows. Appl Math Model 38(17–18):4308–4322. https://doi.org/10.1016/j.apm.2014.05.008
Savage BM, Johnson MC (2001) Flow over ogee spillway: physical and numerical model case study. J Hydraul Eng 127(8):640–649. https://doi.org/10.1061/(ASCE)0733-9429(2001)127:8(640)
Shadloo MS, Oger G, le Touzé D (2016) Smoothed particle hydrodynamics method for fluid flows, towards industrial applications: Motivations, current state, and challenges. Comput Fluids. https://doi.org/10.1016/j.compfluid.2016.05.029
Shao Z, Jahangir Z, MuhammadYasir Q, Atta-ur-Rahman, Mahmood S (2020) Identification of potential sites for a multi-purpose dam using a dam suitability stream model. Water 12(11):3249. https://doi.org/10.3390/w12113249
Shimizu Y, Khayyer A, Gotoh H, Nagashima K (2020) An enhanced multiphase ISPH-based method for accurate modeling of oil spill. Coast Eng J 62(4):625–646. https://doi.org/10.1080/21664250.2020.1815362
Teng P, Yang J (2016) CFD modeling of two-phase flow of a spillway chute aerator of large width. J Appl Water Eng Res 4(2):163–177. https://doi.org/10.1080/23249676.2015.1124030
Teng P, Yang J, Pfister M (2016) Studies of two-phase flow at a chute aerator with experiments and CFD modelling. Model Simul Eng 2016:1–11. https://doi.org/10.1155/2016/4729128
Wapda (2004) Mangla dam raising project-sectional physical model study report of main spillway: Wapda model study cell, Gujrawala, Pakistan
Yang J, Andreasson P, Teng P, Xie Q (2019) The past and present of discharge capacity modeling for spillways—a Swedish perspective. Fluids 4(1):10. https://doi.org/10.3390/fluids4010010
Yang J, Teng P, Xie Q, Li S (2020) Understanding water flows and air venting features of spillway—a case study. Water 12(8):2106. https://doi.org/10.3390/w12082106
Ye T, Pan D, Huang C, Liu M (2019) Smoothed particle hydrodynamics (SPH) for complex fluid flows: recent developments in methodology and applications. Phys Fluids 31(1):011301
Zhan X, Qin H, Liu Y, Yao L, Xie W, Liu G, Zhou J (2020) Variational Bayesian neural network for ensemble flood forecasting. Water 12(10):2740. https://doi.org/10.3390/w12102740
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We would like to thank the Water and Power Development Authority of Pakistan for their support in providing the essential data to conduct this study.
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Sarwar, M.K., Nisar, Z., Nabi, G. et al. Hydraulic Analysis of Submerged Spillway Flows and Performance Evaluation of Chute Aerator Using CFD Modeling: A Case Study of Mangla Dam Spillway. Iran J Sci Technol Trans Civ Eng 46, 3485–3497 (2022). https://doi.org/10.1007/s40996-021-00789-3
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DOI: https://doi.org/10.1007/s40996-021-00789-3