![]() In addition, the upstream bend’s effect on the downstream bend was investigated. To this end, bed topography variations along the meander and the downstream straight path were addressed for different mean velocity-to-critical velocity ratios. In this study, different mean velocity-to-critical velocity ratios have been tested at the upstream straight path to determine the meander’s incipient motion. ![]() ![]() These two 180-degree mild bends are located between two upstream and downstream straight paths. As 180-degree meanders are observed in abundance in nature, a meandering channel with two consecutive 180-degree bends was designed and constructed to investigate bed topography variations.
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