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Effect of different meander curvatures on spatial variation of coherent turbulent flow structure inside ingoing multi-bend river meanders

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Abstract

In this paper, the effect of different curvatures on the spatial variation of coherent flow structure inside two physical models with both strongly curved and mild multi-bend meanders is investigated. Three dimensional flow velocities at three sequential meanders were measured using an Acoustic Doppler Velocity meter (Micro-ADV). Three dimensions of flow velocity are classified into two major classes and eight different bursting events. The contribution probability and transition probability of each zone is calculated from experimental data. The results indicated that the effect of curvature in sequential bends was important particularly for strongly curved bends. The contribution probability of the events for strongly curved meanders with relative curvature (Rc/B) of 2.6 were found to be higher than for mild curved meanders with relative curvature (Rc/B) of 4.43. The minimum contribution probability was found in external inward interaction event. In addition, analysis of bursting events showed that the highest values of transition probabilities occurred in the stable organizations for both models. The influences of different curvatures on distributions of the Reynolds shear stress, the turbulent kinetic energy, the streamwise velocity and the vertical velocity were also shown to be in good agreement with eroded bed. The above results can be useful for finding meandering patterns inside rivers and also in river training works.

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References

  • Abad JD, Garcia MH (2009) Experiments in a high-amplitude Kinoshita meandering channel: 1. Implications of bend orientation on mean and turbulent flow structure. Water Resour Res 45:W02401

    Google Scholar 

  • Afzalimehr H, Singh VP (2009) Influence of meandering on the estimation of velocity and shear velocity in cobble-bed channels. J Hydraul Eng (ASCE) 4(10):1126–1135

    Article  Google Scholar 

  • Anwar HO (1986) Turbulent structure in river bends. J Hydraul Eng (ASCE) 112:657–669

    Article  Google Scholar 

  • Best JL (1993) On the interactions between turbulent flow structure, sediment transport and bedform development: some considerations from recent experimental research. In: Clifford N, French JR, Hardisty J (eds) Turbulence: Perspectives on flow and sediment transport. Wiley, New York, NY

  • Blanckaert K (2002) Analysis of coherent flow structures in a bend based on instantaneous-velocity profiling. In: Third international symposium on ultrasonic Doppler methods for fluid mechanics and fluid engineering. EPFL, Lausanne, Switzerland

  • Blanckaert K, De Vriend HJ (2004) Secondary flow in sharp open-channel bends. J Fluid Mech 498:353–380

    Article  Google Scholar 

  • Blanckaert K, De Vriend HJ (2005) Turbulence structure in sharp open-channel bends. J Fluid Mech 536:27–48

    Article  Google Scholar 

  • Blanckaert K, Graf WH (2001a) Mean flow and turbulence in open-channel bend. J Hydraul Eng (ASCE) 127:835–847

    Article  Google Scholar 

  • Blanckaert K, Graf WH (2001b) Momentum transport in sharp open-channel bends. J Hydraul Eng (ASCE) 130(3):186–198

    Article  Google Scholar 

  • Cellino M (2002) Ultrasonic measurements of instantaneous velocity and suspended concentration in open channel flow. In: Third international symposium on ultrasonic Doppler methods for fluid mechanics and fluid engineering. EPFL, Lausanne, Switzerland

  • Cellino M, Lemmin U (1999) Coherent flow structure analysis in suspension flows. In: 28th IAHR congress, Graz, Austria

  • da Silva AMF (1995) Turbulent flow in sine-generated meandering channel. PhD Thesis, Queen’s University, Kingston, Canada

  • da Silva AMF (2006) On why and how do rivers meander. J Hydraul Res 44(5):579–590

    Article  Google Scholar 

  • da Silva AMF, El-Tahawy T, Tape WD (2006) Variations of flow pattern with sinuosity in sine-generated meandering streams. J Hydraul Eng (ASCE) 132(10):1003–1014

    Article  Google Scholar 

  • Dietrich WE (1987) Mechanics of flow and sediment transport in river bends. In: Richards KS (ed) River channels environment and process. Basil Blackwell, Oxford, pp 179–224

    Google Scholar 

  • Esfahani FS, Keshavarzi AR (2010a) The effect of different curvatures on flow structure inside the river meander. In: 5th national congress on civil engineering, Ferdowsi University of Mashhad, Mashhad, Iran

  • Esfahani FS, Keshavarzi AR (2010b) On secondary currents in multi-bend rivers with different curvatures. In: 13th annual and 2nd international fluid dynamics conference, Shiraz, Iran

  • Ferro V (2003) ADV measurements of velocity distributions in a gravel-bed flume. Earth Surf Process Landf 28:707–722

    Article  Google Scholar 

  • Frothingham KM, Rhoads BL (2003) Three-dimensional flow structure and channel change in an asymmetrical compound meander loop, Embarras River, Illinois. Earth Surf Process Landf 28:625–644

    Article  Google Scholar 

  • Furbish DJ (1988) River-bend curvature and migration: how are they related? Geology 16:752–755

    Article  Google Scholar 

  • Gob F, Houbrechts G, Hiver JM, Petit F (2005) River dredging, channel dynamics and bed load transport in an incised meandering river (The River Semois, Belgium). River Res Appl 21:791–804

    Article  Google Scholar 

  • Graf NE (2008) 50 years of channel change on a reach of the Big Blue River, Northeast Kansas. MS Thesis, Kansas State University, Manhattan, Kansas

  • Graf WH, Altinakar MS (1998) Fluvial hydraulics: flow and transport processes in channels of simple geometry. Wiley, New York

    Google Scholar 

  • Hamidifar H, Keshavarzi A, Saadatnia M, Sistani B (2008) Experimental investigation of the effect of pile installation on change of erosion and sedimentation pattern in channel’s meander. In: 7th Iranian hydraulic conference, Tehran, Iran

  • Harvey MD (1988) Measurement dynamics of the Sacramento River, California. In: California riparian systems conference, Davis, CA

  • Henderson FM (1966) Open channel flow. Prentice Hall, New Jersey

  • Hickin EJ (1974) The development of meanders in natural river-channels. Am J Sci 274:414–442

    Article  Google Scholar 

  • Hickin EJ, Nanson GC (1975) The character of channel migration on the Beaton River, north-east British Columbia, Canada. Bull Geol Soc Am 86:487–794

    Article  Google Scholar 

  • Hudson PF, Kesel RH (2000) Channel migration and meander-bend curvature in the lower Mississippi River prior to major human modification. Geology 28:531–534

    Article  Google Scholar 

  • Hurther D (2001) Sediment transport assessment in suspension flow based on coherent structure characteristics. In: Proceedings of the JFK student paper competition, 29th IAHR congress, Beijing, China

  • Jafari Mianaei S, Keshavarzi AR (2008) Spatio-temporal variation of transition probability of bursting events over the ripples at the bed of open channel. J Stoch Environ Res Risk Assess 22(2):257–264

    Article  Google Scholar 

  • Jafari Mianaei S, Keshavarzi AR (2010) Study of near bed stochastic turbulence and sediment entrainment over the ripples at the bed of open channel using image processing technique. J Stoch Environ Res Risk Assess 24(5):591–598

    Article  Google Scholar 

  • Jung JW, Yoon SE (2000) Flow and bed topography in a 180-degree curved channel. In: 4th international conference on hydro-science and engineering. Korea Water Resources Association

  • Keshavarzi AR (1997) Entrainment of sediment particles from a flat mobile bed with the influence of near-wall turbulence. PhD Thesis, University of New South Wales, Australia

  • Keshavarzi AR, Ball JE (1997) An analysis of the characteristics of rough bed turbulent shear stress in an open channel flow. J Stoch Hydrol Hydraul 11(3):193–210

    Article  Google Scholar 

  • Keshavarzi AR, Ball JE (1999) An application of image processing in the study of sediment motion. J Hydraul Res 37(4):559–576

    Article  Google Scholar 

  • Keshavarzi AR, Gheisi AR (2006) Stochastic nature of three dimensional bursting events and sediment entrainment in vortex chamber. J Stoch Environ Res Risk Assess 21(1):75–87

    Article  Google Scholar 

  • Keshavarzi AR, Shirvani A (2002) Probability analyses of instantaneous shear stress and entrained particles from the bed. In: CSCE/EWRI of ASCE environmental engineering conference, Niagara

  • Kline SJ, Reynolds WC, Schraub FA, Runstadler PW (1967) The structure of turbulent boundary layers. J Fluid Mech 30(1):741–773

    Article  Google Scholar 

  • Lawler DM, West JR, Couperthwaite JS, Mitchell SB (2001) Application of a novel automatic erosion and deposition monitoring system at a channel bank site on the tidal River Trent, U.K. Estuar Coast Shelf Sci 53:237–247

    Google Scholar 

  • Leschziner MA, Rodi W (1979) Calculation of strongly curved open channel flow. J Hydraul Div 105:1297–1314

    Google Scholar 

  • Makaveyvev NI (1975) River bed and erosion in its basin. Press of the Academy of Sciences of the USSR, Moscow

    Google Scholar 

  • Nakagawa H, Nezu I (1977) Prediction of the contributions to the Reynolds stress from bursting events in open-channel flows. J Fluid Mech 80(1):99–128

    Article  Google Scholar 

  • Nelson JM, Shreve RL, Mclean SR, Drake TG (1995) Role of near bed turbulence structure in bed load transport and bed form mechanics. Water Resour Res 31(8):2071–2086

    Article  Google Scholar 

  • Nezu I, Nakagawa H (1993) Turbulence in open-channel flows. IAHR Monograph, Balkema, Rotterdam, Netherlands

  • Odgaard AJ, Bergs MA (1988) Flow processes in a curved alluvial channel. Water Resour Res 24(1):45–56

    Article  Google Scholar 

  • Rozovskii IL (1957) Flow of water in bends of open channels. Academy of Sciences of the Ukrainian SSR, Kiev, Israel Program for Scientific Translation, Jerusalem

  • Solari L, Zolezzi G, Seminara G (1999) Curvature driven distortion of free bars in river bends. In: Proceedings of the IAHR symposium on river, coastal and estuarine morphodynamics, Genova, pp 563–573

  • Sontek ADV (1997) Operation manual, firmware version 4.0. Sontek, San Diego

  • Stoesser T, Fohlich J, Rodi W (2003) Identification of coherent flow structures in open channel flow over rough bed using large eddy simulation. In: Proceedings of the 30th IAHR Thessaloniki, Greece

  • Termini D (2009) Experimental observations of flow and bed processes in large-amplitude meandering flume. J Hydraul Eng (ASCE) 135(7):575–587

    Article  Google Scholar 

  • Thorne PD, Williams JJ, Heathershaw AD (1989) In situ acoustic measurements of marine gravel threshold and transport. Sedimentology 36:61–74

    Article  Google Scholar 

  • Tilston M, Rennie C, Arnott RWC, Post G (2009) On the nature of coherent turbulent structures in channel bends: burst-sweep orientations in three-dimensional flow fields. In: 33rd IAHR congress: water engineering for a sustainable environment

  • Yalin MS (1992) River mechanics. Pergamon Press, Oxford

    Google Scholar 

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  1. Alireza Keshavarzi

    Present address: School of Civil & Environmental Engineering, F.E.I.T., UTS, Broadway, Sydney, NSW, 2007, Australia

Authors and Affiliations

  1. Water Engineering Department, Shiraz University, 71444, Shiraz, Iran

    Fariba Sadat Esfahani & Alireza Keshavarzi

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  1. Fariba Sadat Esfahani
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  2. Alireza Keshavarzi
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Correspondence to Alireza Keshavarzi.

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Esfahani, F.S., Keshavarzi, A. Effect of different meander curvatures on spatial variation of coherent turbulent flow structure inside ingoing multi-bend river meanders. Stoch Environ Res Risk Assess 25, 913–928 (2011). https://doi.org/10.1007/s00477-011-0506-4

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