Experimental Investigation of Submerged Vanes’ Shape effect on river-bend stability

Document Type : Research Paper


Department of Civil Engineering, Shahid Bahonar University of Kerman, Iran.


In river meandering, when flow passes through a bend, reduction of flow velocity and rising hydrostatic pressure cause super elevation phenomena at outer side and reduction of water surface at inner-side of the bend. A helical motion results, causing erosion of the outer side of the bend. Installation of submerged vanes on the stream bed can reduce erosion of the outer bank significantly. In this study, to investigate the effect of shape on van effectiveness, a physical model with a rectangular-section canal of 110*0.73*0.35(m) dimensions with two 90° and 180° bends, has been constructed. Overall 28 experiments were performed, using three shapes of submerged vanes (flat, angled and curved). These vanes were installed on the bed of 90° and 180° bends of model with arrays of one, two and three vanes in parallel and zigzag patterns. Three curved vanes installed in parallel pattern on 90°-bend and zigzag pattern on 180-bend can be more effective in river bank protection.


Voisin, A., and Townsend, R. D.(2002)."Model testing of Submerged Vanes in Strongly Curved Narrow Channel Bends." Cand. J. Civ.Eng. 29:37-42.
Odgaard, A. J., and Wang, Y.(1991). "Sediment Management with Submerged Vanes. II:Applications." Journal of Hydraulic Engineering. ASCE, Vol. 117, No. 3,pp.284-302.
Odgaard, A. J., and Kennedy, J. F.(1983)."River-bend bank Protection by Submerged Vanes." Journal of Hydraulic Engineering. ASCE,Vol. 109, No. 8, pp. 1161-1173
Barkdoll, B. D., Ettema, R. and Odgaard, A. J., (1999). "Sediment control at lateral diversions:Limits and Enhancements to vane use." Journal of Hydraulic ngineering ASCE, Vol. 125, No. 8, pp. 862-870
Odgaard, A. J., and Mosconi, C. E.(1987). “Streambank protection by Submerged Vanes,” Journal of Hydraulic Engineering ASCE, Vol. 113, No. 4, pp. 520-536, 1987.
Wang, Y., Odgaard, A. J., Melville, B.W. and Jain, S.C.(1996). “Sediment control at water intakes.” Journal of Hydraulic Engineering, ASCE, Vol. 122, No. 6, pp. 353-356.
Marelius, F., and Sinha, S. K. (1998). "Eeperimental Investigation of flow past Submerged Vanes," Journal of Hydraulic Engineering, ASCE, Vol. 124, No. 5
Johnson, P. A., Hey, R. D., Tessier, M. and Rosgen, D. L. (2001). “Use of vanes for control of scour at vertical wall abutments.” Journal of Hydraulic Engineering, ASCE, Vol. 127, No. 9, pp. 772-778.
Johnson, P. A., Hey, R. D., Tessier, M. and Rosgen, D. L. (2003). "Barkdoll, B.D.(2002)., Discussion of: Use of vanes for control of scour at vertical wall abutments. Journal of Hyd.Eng.vol.127,No.9,September 2001,pp.772-778", Journal of Hydraulic Engineering, ASCE, Vol. 129, No. 3,pp. 246-247.
Coonrod, J., and Stormont, J.(2004)."3-D Numerical Simulation Study of Permanent Sediment Control Submerged Vanes."New Mexico Institute of echnology,Department of Civil Eng,Open Channel aboratory.
Keat, T. S.,Guoliang, Y.,Yong, L. S.,and Chen, O. .(2005). "Flow Structure and Sediment Motion around Submerged Vanes in Open Channel." Journal of aterway,Port,Coastal,and Ocean Engineering., ASCE, Vol. 131, No. 3.
Leopold, L. B., Wolman, M. G., and Miller, J. P.,(1964). "Fluvial processes in geomorphology." Freeman, San Francisco.
Struiksma, N., (1985). " Prediction of 2D bed topography in rivers." Journal of Hydraulic Engineering. 111(8), 1169-1182.