ESTIMATION OF MORPHOLOGICAL IMPACT OF GROYNE LENGTHENING

I. RŠtky, …va RŠtky


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.
 

 

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