Clear Water Local Scour by Submerged Three-Dimensional Wall Jets: Effect of Tailwater Depth

Faruque, Md Abdullah Al; Sarathi, Partha; Balachandar, Ram

doi:10.1061/(asce)0733-9429(2006)132:6(575)

Cited by 30 publications

(31 citation statements)

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“…As the jet exits the nozzle, it expands and interacts with the sand bed. The initial progression of scour hole and ridge is similar to those observed by other researchers (Ade and Rajaratnam, 1998;Faruque et al, 2006;Sarathi et al, 2008) and a detailed description is avoided here for brevity. In addition, frequent near-bed turbulent bursts were observed all over the scour hole identified by the sporadic movement of sand.…”

Section: Experimental Setup and Measurementssupporting

confidence: 85%

“…They reported the presence of two secondary ridges on both sides of the main deposition ridge in the experiment at a low tailwater depth (H ¼ 2b o ). On the other hand, Faruque et al (2006) and Sarathi et al (2008) noted that no secondary effects were observed for an ER of 41.4. Clearly, the occurrence of the secondary ridges along the wall should be an effect of the jet expansion ratio.…”

Section: Introductionmentioning

confidence: 98%

“…A few scour studies caused by square wall jets (Faruque et al, 2006;Sarathi et al, 2008) and circular wall jets (Ade and Rajaratnam, 1998;Ali and Lim, 1986;Chiew and Lim, 1996;Rajaratnam and Berry, 1977) have also been reported. Results showed that the geometric characteristics of the scour hole depend mainly on tailwater depth and densimetric Froude number (F o …”

Section: Introductionmentioning

confidence: 99%

“…He also noted that the downstream channel would affect the lateral development of the scour hole if it become too narrow and restrict the normal diffusion of the three-dimensional jet. However, Faruque et al (2006) have noted that the width of the downstream channel does have an effect on the scour process even for an expansion ratio (ER) as high as 14.5. They reported the presence of two secondary ridges on both sides of the main deposition ridge in the experiment at a low tailwater depth (H ¼ 2b o ).…”

Section: Introductionmentioning

confidence: 99%

“…Empirical equations are also proposed to explain the dependency of scour depth on the densimetric Froude number, tailwater ratio (TWR ¼ H/b o ) and expansion ratio (ER). (Bey et al, 2007;Faruque et al, 2006). Two different square nozzles (b o ¼ 19.0 and 26.6 mm, see Fig.…”

Section: Introductionmentioning

confidence: 99%

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Section: Experimental Setup and Measurementssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of channel width and tailwater depth on local scour caused by square jets

Sui

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Journal of Hydro-environment Research

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Sediment transport and topographic evolution of a coupled river and river plume system: An experimental and numerical study

Chatanantavet

Lamb

2014

J. Geophys. Res. Earth Surf.

108

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Sediment transfer from rivers to the ocean is the fundamental driver of continental sedimentation with implications for carbon burial, land use dynamics, and unraveling global climate change and Earth history from sedimentary strata. Coastal rivers are dynamically coupled to their offshore plumes at the river mouth creating regions of nonuniform flow that can dictate patterns of erosion and deposition both onshore and offshore. However, there are limited experimental and modeling studies on sediment transport and morphodynamics of coupled river and river plume systems and their response to multiple flood events. To address this knowledge gap, we developed a quasi-2-D, morphodynamic numerical model and conducted exploratory flume experiments in a 7.5 m long flume where a 10 cm wide river channel was connected to a 76 cm wide "ocean basin." Both the numerical model and the flume results demonstrate that (1) during low-discharge flows, backwater hydrodynamics cause spatial-flow deceleration and deposition in the river channel and the offshore plume area, and (2) during high flows the water surface is drawn down to sea level, resulting in spatial-flow acceleration and bed scour. During high-discharge flows, we also found that the offshore river plume self-channelized owing to both levee formation and bed scour. Our study suggests that coastal rivers may be in a perpetual state of morphodynamic adjustment and highlights the need to link rivers and river plumes under a suite of flow discharges to accurately predict fluvio-deltaic morphodynamics and connectivity between fluvial sediment sources and marine sinks.

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Andreadis K, Lettenmaier D. 2006. Assimilating remotely sensed snow observations into a macroscale hydrology model. Advances in Water Resources 29: 872-886. Deidda R, Badas M, Piga E. 2006. Space-time multifractality of remotely sensed rainfall fields. Journal of Hydrology 322: 2-13. Elo A. 2006. Long-term modelling of winter ice periods for morphologically different lakes. G. 2006. Palaeomonsoon variability in the southern fringe of the Badain jaran Desert, China, since 130 ka BP. Earth Surface Processes and Landforms 31: 265-283. Ha K, Ha E. 2006. Climatic change and interannual fluctuations in the long-term record of monthly precipitation for Seoul. International Journal of Climatology 26: 607-618. Hagg W, Braun L, Weber M, Becht M. 2006. Runoff modelling in glacierized Central Asian catchments for present-day and future climate. Nordic Hydrology 37: 93-105. Koutsoyiannis D. 2006. A toy model of climatic variability with scaling behaviour. Journal of Hydrology 322: 25-48. Kundu P, Bell T. 2006. Space-time scaling behavior of rain statistics in a stochastic fractional diffusion model. . Spatial patterns in thunderstorm rainfall events and their coupling with watershed hydrological response. Advances in Water Resources 29: 843-860. Salvadori G, De Michele C. 2006. Statistical characterization of temporal structure of storms. Advances in Water Resources 29: 827-842. Schmidli J, Frei C, Vidale P. 2006. Downscaling from GC precipitation: a benchmark for dynamical and statistical downscaling methods. International Journal of Climatology 26: 679-689. Veneziano D, Furcolo P, Iacobellis V. 2006. Imperfect scaling of time and space-time rainfall. . 2006. Evaluation of longitudinal and transverse dispersivities/distance ratios for tracer test in a radially convergent flow field with scale-dependent dispersion. Advances in Water Resources 29: 887-898. Chung W, Kang Y. 2006. Classifying river waves by the Saint Venant equations decoupled in the laplacian frequency domain. Journal of Hydraulic Engineering 132: 666-680. De Bartolo S, Veltri M, Primavera L. 2006. Estimated generalized dimensions of river networks. Journal of Hydrology 322: 181-191. Emiroglu M, Baylar A. 2006. Closure to "Influence of included angle and sill slope on air entrainment of triangular planform labyrinth weirs" by M. Emin Emiroglu and Ahmet Baylar. Journal of Hydraulic Engineering 132: 748. Faruque M, Sarathi P, Balachandar R. 2006. Clear water local scour by submerged three-dimensional wall jets: effect of tailwater depth. Journal of Hydraulic Engineering 132: 575-580. Guo J, Julien P. 2006. Closure to "Shear stress in smooth rectangular open-channel flows" by Junke Guo and Pierre Y. Julien. Journal of Hydraulic Engineering 132: 631-632. Hsu M, Fu J, Liu W. 2006. Dynamic routing model with realtime roughness updating for flood forecasting. Journal of Hydraulic Engineering 132: 605-619. Huang W. 2006. Discussion of "Influence of included angle and sill slope on air entrainment of triangular planform labyrinth weirs" by M. Ernin Erniroglu and Ahmet B...

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Clear Water Local Scour by Submerged Three-Dimensional Wall Jets: Effect of Tailwater Depth

Cited by 30 publications

References 10 publications

Influence of channel width and tailwater depth on local scour caused by square jets

Influence of channel width and tailwater depth on local scour caused by square jets

Sediment transport and topographic evolution of a coupled river and river plume system: An experimental and numerical study

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