Effect of Accelerating on Sediment Incipient Motion over Dunes under Shallow Water Condition

Dian Guang Ma; Wei Liang Dong; Jun Feng Xu

doi:10.4028/www.scientific.net/AMR.1065-1069.561

Paper Titles

Sea Cliff Stability in Tibau do Sul, Brazil
p.540

Analysis of Global Safety Degree of Arch Dam Based on Catastrophe Theory
p.547

Approach and Realization of Energy Saving Technology Innovating at the Pump Station
p.552

Duncan-Chang Model Parameters and Normalized Behavior of the Huanggou Pumped Storage Power Station
p.557

Effect of Accelerating on Sediment Incipient Motion over Dunes under Shallow Water Condition
p.561

Fluid-Structure Interaction Analysis of Layered Water Intake Structure Considering Load Changes
p.569

Models of Subsidence Sinkhole in Soils around Reservoirs
p.575

Numerical Simulation of Seepage Control Effects at a Gravity Dam Site
p.580

Seismic Analyses of 3D Fengman Concrete Gravity Dam
p.586

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1065-1069Effect of Accelerating on Sediment Incipient...

Effect of Accelerating on Sediment Incipient Motion over Dunes under Shallow Water Condition

Abstract:

Due to the complexity of bed form morphology and dune movement, this paper selected a series of 2-D asymmetric dunes in order to address the development of a flow region associated with velocity profile characteristics and sediment incipient motion under shallow water condition. Experiments were conducted over four asymmetric dunes of one crest length (4 m), two crest height (0.3m,0.4m) and two uniform sediments with mean grain sizes D=0.5 and 0.7 mm at the TianJin Research Institute For Water Transport Engineering, China. By using Acoustic Doppler Velocimeter (ADV), the instantaneous velocities were measured at four cross sections giving a total of 16 measured profiles. The variations of velocity profile along the flow affected by the wavy bottom have been studied. The results show that the effect of flow acceleration plays an important role in governing incipient motion over dunes.

You might also be interested in these eBooks

Civil, Structural and Environmental Engineering III

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 1065-1069)

Pages:

561-568

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.561

Citation:

Cite this paper

Online since:

December 2014

Authors:

Dian Guang Ma*, Wei Liang Dong, Jun Feng Xu

Keywords:

Accelerating Flow, Incipient Motion, Shallow Water, Velocity Profiles

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] H. R. Henry, E. M. Laursen, J. R. Adams, et al: Pressure and shear distribution on schematic dunes. Nat. Sci. Foundation, Washington, Final Rep. NSF G-7409(1964).

Google Scholar

[2] M. F. Rifai, K. V. H. Smith: Journal of the Hydraulics Division. Vol. 97(7) (1971), pp.963-976.

Google Scholar

[3] C. S. James and C. F. G. Cottino: WATER SA-PRETORIA-. Vol. 21 (1995), pp.299-306.

Google Scholar

[4] J. L. Best: Fluvial sedimentology VII. Vol. 35 (2005), pp.41-60.

Google Scholar

[5] R. Balachandar, B. S. Hyun and V. C. Patel: Canadian Journal of Civil Engineering. Vol. 34(12)(2007), pp.1587-1599.

Google Scholar

[6] J. M. Nelson, S. R. McLean and S. R. Wolfe: Water Resources Research. Vol. 29(12) (1993), pp.3935-3953.

Google Scholar

[7] Li LIU, Chengyu Yang and Guangchun He: JOURNAL OF CHONGOING JIAOTONG UNIVERSITY. Vol. 23(5) (2004), pp.118-121. In Chinese.

Google Scholar

[8] A. Emadzadeh, Y. M. Chiew and H. Afzalimehr: Advances in Water Resources. Vol. 33(9) (2010), pp.1094-1104.

DOI: 10.1016/j.advwatres.2010.06.014

Google Scholar

[9] S. J. Bennett and J. L. Best: Sedimentology. Vol. 42(3) (1995), pp.491-513.

Google Scholar

[10] S. P. Ojha and B. S. Mazumder: Advances in Water Resources. Vol. 31(3) (2008), pp.561-576.

Google Scholar

[11] J. D. Smith and S. R. McLean: J Geophys Res. Vol. 82 (1977), p.1735–46.

Google Scholar

[12] Junhua Zhang, Yanping Wang and Aiqin Shang: Journal of Sediment Research. Vol. 4(2005), pp.73-78. In Chinese.

Google Scholar