ESTIMATION OF MORPHOLOGICAL IMPACT OF GROYNE LENGTHENING
I. Rátky, Éva Rátky
Abstract. - Estimation of morphological impact of groyne lengthening.
Hydraulic-morphological calculations in open channel flows
still cause problems for modellers, partially because of theoretical
uncertainties and due to lack of sufficient data on sediment composition or
sediment load. Though morphological changes in rivers can be precise described
with 3D numerical models 2D models can be useful tools as well. Our aim was to
study if a 2D calculation with the available data and computing capacities gives
a reasonable estimation on how river training structures (in this case
lengthening of a groyne) affect the river bed morphology.
Key-words: Hydrodynamic-morphological
numerical model, groyne, sediment transport, bank-filtered aquifer.