Abstract
The aim of this study was to assess the simulation and prediction of scour processes, both hydrodynamically and morphologically, around vertical and inclined piers. A new version of FLOW-3D v. 11.2, including three sediment transport equations, was extensively used for estimating the scour around the pier. The results of the model in terms of water surface, flow velocity, bed shear stress and scour depth were effectively compared with several sets of the experimental and numerical data in the literature. The model provided an accurate estimation of water surface, flow velocity and bed shear stress. However, the results for the vertical velocity upstream of the pier were underestimated. The predictive capabilities of the model were mainly dependent on the pier shape and inclined direction. The downflow, stream-wise velocity, shear stress and local scour depth were significantly reduced at the inclination angle of the circular pier downstream. However, they were nearly equal to those of an inclined perpendicular circular pier. This study strongly demonstrates that a 3D hydromorphological model can be effectively used to predict the scour depth around piers.
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Abbreviations
- D :
-
Pier diameter
- \(d_\mathrm{s}\) :
-
Equilibrium scour depth
- \(D_{50}\) :
-
Mean sediment size
- \(g_{i}\) :
-
Gravitational acceleration in ith direction
- k :
-
von Karman constant
- P :
-
Total pressure
- \(P_{o}\) :
-
Upstream undisturbed static pressure
- \(S_{o}\) :
-
Longitudinal slope of flume
- t :
-
Time
- U :
-
Average flow velocity
- \(u_\mathrm{p}\) :
-
Mean flow velocity at point p
- \(u_{*}\) :
-
Shear velocity
- \(V_{x}\) :
-
Local flow velocity in x-direction
- \(V_{y}\) :
-
Local flow velocity in y-direction
- \(V_{z}\) :
-
Local flow velocity in z-direction
- x :
-
Distance in x-direction
- h :
-
Flow depth
- y :
-
Distance in y-direction
- \(Z+\) :
-
Wall unit distance
- z :
-
Distance in z-direction
- \(z_\mathrm{p}\) :
-
Distance from point p to wall
- q :
-
Volume fraction of qth phase in control volume
- \(\Delta B\) :
-
Roughness function
- \(\delta \) :
-
Kronecker delta function
- \(pu_{i}\,u_j \) :
-
Turbulence stresses
- Equ.:
-
Equilibrium scour depth
References
Khodabakhshi, A.; Farhadi, A.: Experimental study on effect of slot on bridge pier structures. Appl. Res. J. 2, 238–243 (2016)
Ismael, A.; Gunal, M.; Hussein, H.: Effect of bridge pier position on scour reduction according to flow direction. Arab. J. Sci. Eng. (2015). https://doi.org/10.1007/s13369-015-1625-x
Das, S.; Das, R.; Mazumdar, A.: Comparison of local scour characteristics around two eccentric piers of different shapes. Arab. J. Sci. Eng. (2015). https://doi.org/10.1007/s13369-015-1817-4
Khan, M.; Tufail, M.; Ajmal, M.; Ul, Z.; Kim, T.: Experimental analysis of the scour pattern modeling of scour depth around bridge piers. Arab. J. Sci. Eng. (2017). https://doi.org/10.1007/s13369-017-2599-7
Nelson, J.M.; Mcdonald, R.R.; Shimizu, Y.; Kimura, I.; Nabi, M.; Asahi, K.: Modelling flow, sediment transport and morphodynamics in rivers, chap 18. In: Kondolf, G.M; Piégay, H. (eds.) Tools in Fluvial Geomorphology, 2nd edn. Wiley (2016)
Alemi, M.; Maia, R.: Numerical simulation of the flow and local scour process around single and complex bridge piers. Int. J. Civ. Eng. (2017). https://doi.org/10.1007/s40999-016-0137-8
Ehteram, M.; Mahdavi, A.: Numerical modeling of scour depth at side piers of the bridge. J. Comput. Appl. Math. 280, 68–79 (2015). https://doi.org/10.1016/j.cam.2014.11.039
Mohamed, H.I.: Numerical simulation of flow and local scour at two submerged-emergent tandem. J. Eng. Sci. Assiut Univ. 41, 1–19 (2013)
Zhang, Z.; Shi, B.: Numerical simulation of local scour around underwater pipeline based on FLUENT software. J. Appl. Fluid Mech. 9, 711–718 (2016)
Duan, J.G.: Two-dimensional model simulation of flow field around bridge piers. EWRI 2005, 1–12 (2005)
Nekoufar, K.; Pouladi, F.: Analyzing the performance of collar and slot in reduction of scouring the bridge piers with software SSIIM. Acta Tech. Corviniensis Bull. Eng. 7(2), 93 (2014)
Villaret, C.; Hervouet, J.; Kopmann, R.; Merkel, U.; Davies, A.G.: Morphodynamic modeling using the Telemac finite-element system. Comput. Geosci. 53, 105–113 (2013). https://doi.org/10.1016/j.cageo.2011.10.004
Olsen, N.R.B.; Melaaen, M.C.: Three-dimensional calculation of scour around cylinders. J. Hydraul. Eng. 119, 1048–1054 (1994)
Olsen, N.R.B.; Stokseth, S.: Three-dimensional numerical modelling of water flow in a river with large bed roughness. J. Hydraul. Res. 33, 571–581 (1995). https://doi.org/10.1080/00221689509498662
Richardsonl, J.E.; Panchan, V.G.: Three-dimensional simulation of scour-inducing flow at bridge piers. J. Hydraul. Eng. 124, 530–540 (1998)
Roulund, A.; Sumer, B.M.; Fredsoe, J.; Michelsen, J.: Numerical and experimental investigation of flow and scour around a circular pile. J. Fluid Mech. 534, 351–401 (2005). https://doi.org/10.1017/S0022112005004507
Ali, K.H.M.; Karim, O.: Simulation of flow around piers. J. Hydraul. Res. 40, 161–174 (2002). https://doi.org/10.1080/00221680209499859
Salaheldin, T.M.; Imran, J.; Chaudhry, M.H.: Numerical modeling of three-dimensional flow field around circular piers. J. Hydraul. Eng. 130, 91–100 (2004)
Sakib, M.N.: phD-CFD Techniques for Simulation of Flow in a Scour Hole Around a Bridge Pier, Ph.D. (2013)
Khosronejad, A.; Kang, S.; Sotiropoulos, F.: Experimental and computational investigation of local scour around bridge piers. Adv. Water Resour. 37, 73–85 (2012). https://doi.org/10.1016/j.advwatres.2011.09.013
Thanh, N.V.; Chung, D.H.; Nghien, T.D.: Prediction of the local scour at the bridge square pier using a 3D numerical model. Open J. Appl. Sci. 4, 34–42 (2014). https://doi.org/10.4236/ojapps.2014.42005
Ahmad, N.; Bihs, H.; Kamath, A.; Arntsen, Ø.A.: Three-dimensional CFD modeling of wave scour around side-by-side and triangular arrangement of piles with REEF3D. Procedia Eng. 116, 683–690 (2015). https://doi.org/10.1016/j.proeng.2015.08.355
Baykal, C.; Sumer, B.M.; Fuhrman, D.R.; Jacobsen, N.G.; Fredsøe, J.: Numerical investigation of flow and scour around a vertical circular cylinder. Philos. Trans. A. 373, 1048–1054 (2015). https://doi.org/10.1098/rsta.2014.0104
Pang, A.L.J.; Skote, M.; Lim, S.Y.; Gullman-strand, J.; Morgan, N.: A numerical approach for determining equilibrium scour depth around a mono-pile due to steady currents. Phys. Procedia 57, 114–124 (2016). https://doi.org/10.1016/j.apor.2016.02.010
Bozkus, Z.; Yildiz, O.: Effects of inclination of bridge piers on scouring depth. J. Hydraul. Eng. 130, 827–832 (2004). https://doi.org/10.1061/(ASCE)0733-9429(2004)130:8(827)
Vaghefi, M.; Ghodsian, M.; Salimi, S.: The effect of circular bridge piers with different inclination angles toward. Sadhana. (2015). https://doi.org/10.1007/s12046-015-0443-x
Bozkuş, Z.; Çeşme, M.: Reduction of scouring depth by using inclined piers. Can. J. Civ. Eng. 37, 1621–1630 (2010). https://doi.org/10.1139/L10-099
Vaghefi, M.; Ghodsian, M.; Salimi, S.: Scour formation due to laterally inclined circular pier. Arab. J. Sci. Eng. 41, 1311–1318 (2016). https://doi.org/10.1007/s13369-015-1920-6
Ben, S.; Khajeh, M.; Vaghefi, M.: The scour pattern around an inclined cylindrical pier in a sharp 180-degree bend? An experimental study. Int. J. River Basin Manag. (2017). https://doi.org/10.1080/15715124.2016.1274322
Vlachos, P.P.; Telionis, D.P.: The effect of free surface on the vortex shedding from inclined circular cylinders. J. Fluids Eng. 130, 1–9 (2017). https://doi.org/10.1115/1.2829578
Jain, A.; Modarres-sadeghi, Y.: Vortex-induced vibrations of a flexibly-mounted inclined cylinder. J. Fluids Struct. 43, 28–40 (2013). https://doi.org/10.1016/j.jfluidstructs.2013.08.005
Norton, D.J.; Texas, A.: Wind tunnel tests of inclined circular cylinders. In: Offshore Technology Conference (1983)
Kitsikoudis, V.; Kirca, V.S.O.; Yagci, O.; Furkan, M.: Clear-water scour and flow field alteration around an inclined pile 129, 59–73 (2017). https://doi.org/10.1016/j.coastaleng.2017.09.001
Xie, Z.: phD Theoretical and numerical research on sediment transport in pressurized flow conditions, Ph.D. 217 (2011)
Wei, G.; Brethour, J.; Grünzner, M.; Burnham, J.: Report sedimentation scour model. Flow Science Inc. Report 03-1–29 (2014)
Hirt, B.D.; Nichols, C.W.: Volume of fluid (VOF) method for the dynamics of free boundaries. J. Comput. Phys. 39, 201–225 (1985)
Zhang, Q.; Zhou, X.; Wang, J.: Numerical investigation of local scour around three adjacent piles with different arrangements under current. Ocean Eng. 142, 625–638 (2017). https://doi.org/10.1016/j.oceaneng.2017.07.045
van Rijn, L.C.: Sediment Transport modeling (1985). https://doi.org/10.5772/647
Meyer-Peter, E.; Muller, R.: Formulas for bed-load transport. Int. Assoc. Hydraul. Struct. Res. 2, 7–9 (1948)
Melville, B.W.: Local scour at bridge sltes. Ph.D. 1994 (1975)
Dey, S.; Bose, S.K.; Sastry, G.L.: Clear water scour at circular piers: a model. J. Hydraul. Eng. 121(12), 869–876 (1995)
Olsen, N.R.B.; Kjellesvig, H.M.: Three-dimensional numerical flow modeling for estimation of maximum local scour depth. J. Hydraul. Res. 36, 579–590 (1998)
Nagata, N.; Hosoda, T.; Nakato, T.; Muramoto, Y.: Three-dimensional numerical model for flow and bed deformation around river hydraulic structures. J. Hydraul. Eng. 131, 1074–1087 (2005). https://doi.org/10.1061/(ASCE)0733-9429(2005)131:12(1074)
Zhi-wen, Z.H.U.; Zhen-qing, L.I.U.: CFD prediction of local scour hole around bridge piers. J. Cent. South Univ. (2012). https://doi.org/10.1007/s11771
Pang, A.L.J.; Global, R.; Centre, T.; Morgan, N.; Register, L.: Determining Scour Depth for Offshore Structures Based on a Hydrodynamics and Optimisation Approach. In: OTC-26848-MS (2016)
Ahmed, F.; Rajaratnam, N.: Flow around bridge piers. J. Hydraul. Eng. 124, 288–300 (1998)
Lyn, D.A.: Turbulence models for sediment transport engineering. Sediment. Eng. (2013). https://doi.org/10.1061/9780784408148.ch16
Ghiassi, R.; Abbasnia, A.H.: Investigation of vorticity effects on local scouring. Arab. J. Sci. Eng. 38, 537–548 (2013). https://doi.org/10.1007/s13369-012-0337-8
Dargahi, B.: Flow field and local scouring around a cylinder. Bulletin No. TRITA-VBI, 137 (1987)
Kitsikoudis, V.; Yagci, O.; Kirca, V.S.O.: Experimental investigation of channel flow through idealized isolated tree-like vegetation. Environ. Fluid Mech. (2016). https://doi.org/10.1007/s10652-016-9487-7
Akhtaruzzaman Sarker, M.: Flow measurement around scoured bridge piers using Acoustic–Doppler velocimeter (ADV). Flow Meas. Instrum. 9, 217–227 (1998). https://doi.org/10.1016/S0955-5986(98)00028-4
Kobayashi, T.: 3-D analysis of flow around a vertical cylinder on a scoured bed. Flow Around Vert. Cylind. 1992, 3482 (1993)
Link, O.; Pfleger, F.; Zanke, U.: Characteristics of developing scour-holes at a sand-embedded cylinder. Int. J. Sediment Res. 23, 258–266 (2008). https://doi.org/10.1016/S1001-6279(08)60023-2
Jahangirzadeh, A.; Basser, H.; Akib, S.; Karami, H.; Naji, S.; Shamshirband, S.: Experimental and numerical investigation of the effect of different shapes of collars on the reduction of scour around a single bridge pier. PLoS ONE 9, e98592 (2014). https://doi.org/10.1371/journal.pone.0098592
Acknowledgements
The first author is supported by a scholarship from the Mission Department, Ministry of Higher Education, Egypt, which is gratefully acknowledged. Second, I am thankful to Egypt-Japan University of Science and Technology (E-JUST) and Japan International Cooperation Agency (JICA) for offering the tools and equipment needed for the research work.
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Omara, H., Elsayed, S.M., Abdeelaal, G.M. et al. Hydromorphological Numerical Model of the Local Scour Process Around Bridge Piers. Arab J Sci Eng 44, 4183–4199 (2019). https://doi.org/10.1007/s13369-018-3359-z
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DOI: https://doi.org/10.1007/s13369-018-3359-z