TY - GEN
T1 - Flow field and bed topography in river meanders
AU - Johannesson, Helgi
AU - Parker, Gary
PY - 1988
Y1 - 1988
N2 - A mathematical model is developed for the calculation of flow field and bed topography in curved channels with an erodible bed. A small perturbation approach is used to linearize the governing equations, which retain the full coupling between the flow field, the bedload transport, and the bed topography. This coupling is shown to increase significantly the lateral bed slope in the upstream part of a channel bend, even beyond the value for fully developed bend flow which is approached in the downstream part of a channel bend. This coupling is also shown to give rise to resonant behavior for certain combinations of input variables; the common origin of the two phenomena is explained.
AB - A mathematical model is developed for the calculation of flow field and bed topography in curved channels with an erodible bed. A small perturbation approach is used to linearize the governing equations, which retain the full coupling between the flow field, the bedload transport, and the bed topography. This coupling is shown to increase significantly the lateral bed slope in the upstream part of a channel bend, even beyond the value for fully developed bend flow which is approached in the downstream part of a channel bend. This coupling is also shown to give rise to resonant behavior for certain combinations of input variables; the common origin of the two phenomena is explained.
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M3 - Conference contribution
AN - SCOPUS:0024129247
SN - 0872626709
SN - 0872626709
T3 - Hydraul Eng Proc 1988 Natl Conf Hydraul Eng
SP - 684
EP - 689
BT - Hydraul Eng Proc 1988 Natl Conf Hydraul Eng
PB - Publ by ASCE
T2 - Hydraulic Engineering: Proceedings of the 1988 National Conference on Hydraulic Engineering
Y2 - 8 August 1988 through 12 August 1988
ER -