TY - GEN
T1 - Erosion of steep river banks and time evolution towards equilibrium channel shape
AU - Kovacs, Agnes
AU - Parker, Gary
PY - 1992
Y1 - 1992
N2 - A numerical analysis of the time evolution of straight river channels is presented. The bed and bank, material is taken to be coarse, non-cohesive and uniform in size. As a result of the interaction of the flow and the bed, the cross-sectional shape of the river evolves in time toward a dynamic equilibrium shape. This equilibrium is characterized by constant width, vanishing sediment transport in the transverse direction, and small but non-vanishing streamwise transport rate of bed sediment. The model successfully describes the time relaxation of an initially trapezoidal channel toward the equilibrium shape, as evidenced by comparison with experimental data.
AB - A numerical analysis of the time evolution of straight river channels is presented. The bed and bank, material is taken to be coarse, non-cohesive and uniform in size. As a result of the interaction of the flow and the bed, the cross-sectional shape of the river evolves in time toward a dynamic equilibrium shape. This equilibrium is characterized by constant width, vanishing sediment transport in the transverse direction, and small but non-vanishing streamwise transport rate of bed sediment. The model successfully describes the time relaxation of an initially trapezoidal channel toward the equilibrium shape, as evidenced by comparison with experimental data.
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M3 - Conference contribution
AN - SCOPUS:0026632036
SN - 0872628671
T3 - Proceedings of Engineering Mechanics
SP - 896
EP - 899
BT - Proceedings of Engineering Mechanics
PB - Publ by ASCE
T2 - Proceedings of the 9th Conference on Engineering Mechanics
Y2 - 24 May 1992 through 27 May 1992
ER -