Hydrodynamic Characteristics of a Suspended Curtain for Sediment Trapping
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 141, Issue 1
Abstract
Simple and effective technologies for promoting deposition and preventing scour have become the focus of intense research in recent years. This study investigated the hydrodynamic characteristics of an improved single suspended curtain (SC) structure for sediment trapping. The SC consisted of a thin, durable floating sheet, strings, and holding anchors. The floating sheet was fixed to the bed by the strings and anchors. The curtain itself was rigid, but could be free to orientate with the approaching flow. The majority of the flow passed over the curtain, and a large transverse recirculation zone developed on the lee side of the curtain. The inclination of the SC, recirculation zone, and forces on the SC under uniform flow condition were investigated. In addition, corresponding empirical formulas were proposed for calculating the inclination angle, recirculation length, drag coefficient, and anchoring force.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
Financial support provided by the National Natural Science Foundation of China through Grant 51179101 is acknowledged. The authors also appreciate the editor, assistant editor, and reviewers for their comments and constructive suggestions on the revision of this paper.
References
Álvarez-Mozos, J., et al. (2014). “Evaluation of erosion control geotextiles on steep slopes. Part 1: Effects on runoff and soil loss.” Catena, 118(July), 168–178.
AutoCAD 2012 [Computer software]. San Rafael, CA, Autodesk.
Bhalerao, A. R., and Garde, R. J. (2010). “Design of riprap for protection against scour around pier.” J. Hydraul. Eng., 16(1), 79–92.
Charlier, R. H., Chaineux, M. C. P., and Morcos, S. (2005). “Panorama of the history of coastal protection.” J. Coast. Res., 21(1), 79–111.
Chung, C.-H. (1993). “Thirty years of ecological engineering with Spartina plantations in China.” Ecol. Eng., 2(3), 261–289.
Dugué, V., Blanckaert, K., Chen, Q., and Schleiss, A. J. (2013). “Reduction of bend scour with an air-bubble screen—Morphology and flow patterns.” Int. J. Sediment Res., 28(1), 15–23.
Gong, C., Chen, M., Zhu, X., Gu, J., Zhang, W., and Shen, Z. (2001). “An experimental study on effects of offshore pile dikes for beach protection.” Ocean Eng., 19(4), 72–77 (in Chinese).
Heidarpour, M., Afzalimehr, H., and Izadinia, E. (2010). “Reduction of local scour around bridge pier groups using collars.” Int. J. Sediment Res., 25(4), 411–422.
Hoerner, S. F. (1965). Fluid-dynamic drag, Hoerner Fluid Dynamics, Bricktown, NJ.
Li, Y. (2009). “Sedimentation enhancement mechanism of suspended flexible curtain and its response to flow and sediment movement.” Ph.D. thesis, Shanghai Jiao Tong Univ., Shanghai, China.
Li, Y., and Yu, G. (2009). “Experimental investigation on flow characteristics at leeside of suspended flexible curtain for sedimentation enhancement.” China Ocean Eng., 23(3), 565–576.
Liu, C., and Shen, Y. (2008). “Flow structure and sediment transport with impacts of aquatic vegetation.” J. Hydrodyn. Ser. B, 20(4), 461–468.
Qin, P., Xie, M., Jiang, Y., and Chung, C.-H. (1997). “Estimation of the ecological-economic benefits of two Spartina alterniflora plantations in North Jiangsu, China.” Ecol. Eng., 8(1), 5–17.
Rogers, S. M. (1987). “Artificial seaweed for erosion control.” Shore Beach, 55(1), 19–29.
Shen, Y., et al. (2006). “Experimental study on Spartina alterniflora and dam engineering for promoting deposition on tidal-flat in Jiangsu Province of China.” Trans. Chin. Soc. Agric. Eng., 22(4), 42–47 (in Chinese).
Shen, Z., and Cui, D. (2008). “Sedimentation promotion effect quantitative analysis of Nanhui East Shoal Sedimentation Promotion Project.” Shanghai Water, 24(3), 45–47 (in Chinese).
ten Hoopen, H. G. H. (1976). “Recent applications of artificial seaweed in the Netherlands.” Proc., Int. Conf. on Coastal Engineering, Vol. 15, Coastal Engineering Research Council of ASCE, New York, 2905–2915.
Xie, J., and Yan, Y. (2011). “Promoting siltation effects and impacts of Hengsha East Shoal on the Yangtze River Estuary.” J. Hydrodyn. Ser. B, 23(5), 649–659.
Zaleski-Zamenhof, L. C., Gerwick, B. C., Hellesland, J., Matsuishi, M., and Zhang, X. (1990). “Concrete marine structures: A state-of-the-art review.” Mar. Struct., 3(3), 199–235.
Zarrati, A. R., Chamani, M. R., Shafaie, A., and Latifi, M. (2010). “Scour countermeasures for cylindrical piers using riprap and combination of collar and riprap.” Int. J. Sediment Res., 25(3), 313–322.
Information & Authors
Information
Published In
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Oct 25, 2013
Accepted: May 2, 2014
Published online: May 29, 2014
Published in print: Jan 1, 2015
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.