CALCULATION OF THE PARAMETERS OF THE BASE ROWS IN A NON STATIONARY FLOW

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13 ноябр 2025

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CALCULATION OF THE PARAMETERS OF THE BASE ROWS IN A NON STATIONARY FLOW

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Abstract. To date, numerous field and laboratory studies have been conducted worldwide on the movement of bedforms occurring in alluvial channels. Some authors have attempted to generalize this information, but so far they have not been able to achieve completely reliable results. Analysis of the available literature shows that this problem remains one of the main challenges in open channel hydraulics. The analysis of the obtained data indicates that the parameters of the bedforms also change depending on the variation in wave parameters. From this, we can conclude that the bedforms that occur under the influence of wind waves have larger dimensions compared to those in a steady state of channel flow. Indeed, under the influence of waves, an increase in the tangential stresses on the channel bed is observed, which leads to an increase in the parameters of the bedforms.

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# hydraulic resistance# wind waves# deformation# roughness# Key words: unsteady flow# ridges# steepness of ridges# gullies# gullies movement# bedrock# dynamic velocity# shear velocity

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https://eroi.uz/11.0032/A1125-0106

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