Abstract
In rivers that have sections of single-row bar and sections of double-row bar, the occurrence mechanisms of bank erosion, sediment accumulation, and other phenomena differ between these two types of section. To determine which of these sections, non-linear analysis of conditions over the border between the regions is needed.In this study, hydraulic experiments were conducted using a wide width channel in order to understand the bar formation process under unsteady flow conditions. Hydrograph of the experiments were set as the alternate bars and double-raw bars were generated. The results of experiments were compared with linear stability analysis under unsteady flow conditions. It was found that alternate bars and double-raw bars were generated under the influence of flow conditions process.
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