Modelling bathymetry changes within a waterway versus a laboratory experiment

• Autorzy: Sawczyński S. , Kaczmarek L. M. , Biegowski J.
• Języki publikacji: EN

Abstrakty

EN

A three-layer theoretical model for transport of graded sediments was used in our analysis of the silting-up of waterways tested under laboratory conditions. The experiment was conducted in a laboratory basin, in which waves and a current were generated. The current interacted with the waves propagating perpendicularly to the direction in which it was flowing. It was assumed in the calculations that the sediment was entrained from the bed and suspended due to the impact of waves on the bed, after which it was transported by the current along the cross-shore profile of the navigation channel. Thus, it was assumed that the bathymetry changes occur only as a result of changes in the suspended load transport rate. The bed topographic modifications modelling results are in good agreement to the laboratory experimental results, including the rate of silting up the waterway and the bed reconfiguration. The key factor in the calculations concerning the waterway bed reconfiguration proved to be the inclusion of the effect of sediment size sorting on predicting the rate and character of bathymetry changes.

Słowa kluczowe

EN

bathymetry changes; sediment transport; grain size distribution changes; silting up; waterways; hydrodynamic equilibrium

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2013
• Tom: nr 16(1)
• Strony: 41--62
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Sawczyński S.

• Department of Mechanics and Civil Engineering Constructions, University of Warmia and Mazury in Olsztyn

autor

Kaczmarek L. M.

• Department of Geotechnics, University of Technology in Koszalin

autor

Biegowski J.

• Institute of Hydroengineering, Polish Academy of Sciences in Gdańsk

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