2004 Volume 48 Pages 811-816
Groins are mainly used in curved channels to protect river bank against erosion. Arrangement of the groins has been investigated through laboratory experiments, numerical analysis and field observation in river. The groins are often set up at right angle or toward upstream from bank, because scouring is prevented in the downstream and sediment deposition occurs between the groins in these arrangements. On the other, it is important that the weight of groin materials is enough not so as to be washed away.
In this paper, flow and hydrodynamic force distributions for different groin angles accessed by experiments and 3-D numerical flow model and suitable groin angle is discussed.
