Sediment Transport and Water Flow Resistance in Alluvial River Channels: Modified Model of Transport of Non-Uniform Grain-Size Sediments
| Autor: | Pakhom Belyakov, Michał Habel, Zygmunt Babiński, Gennady Gladkov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Water flow Geography Planning and Development 0207 environmental engineering van Rijn sediment transport formula Soil science 02 engineering and technology Surface finish Aquatic Science 01 natural sciences Biochemistry 020701 environmental engineering TD201-500 0105 earth and related environmental sciences Water Science and Technology geography geography.geographical_feature_category river sediment transport modeling Water supply for domestic and industrial purposes mathematical modeling Sediment Alluvial river Hydraulic engineering Grain size alluvial channels Alluvium TC1-978 Sediment transport Geology hydraulic riverbed resistance Communication channel |
| Zdroj: | Water Volume 13 Issue 15 Water, Vol 13, Iss 2038, p 2038 (2021) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13152038 |
| Popis: | The paper presents recommendations for using the results obtained in sediment transport simulation and modeling of channel deformations in rivers. This work relates to the issues of empirical modeling of the water flow characteristics in natural riverbeds with a movable bottom (alluvial channels) which are extremely complex. The study shows that in the simulation of sediment transport and calculation of channel deformations in the rivers, it is expedient to use the calculation dependences of Chézy’s coefficient for assessing the roughness of the bottom sediment mixture, or the dependences of the form based on the field investigation data. Three models are most commonly used and based on the original formulas of Meyer-Peter and Müller (1948), Einstein (1950) and van Rijn (1984). This work deals with assessing the hydraulic resistance of the channel and improving the river sediment transport model in a simulation of riverbed transformation on the basis of previous research to verify it based on 296 field measurements on the Central-East European lowland rivers. The performed test calculations show that the modified van Rijn formula gives the best results from all the considered variants. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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