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We studied a scour in a drainage canal of the Cheboksary hydrosystem tailrace on the Volga river. To protect the hydrosystem tailrace from scouring, we proposed flexible stream-guiding grids that are installed in the stream and effectively affect its kinematics in the bottom area. We calculated in MathCad a system of vortices that occur when the flow runs against adjacent plates of a grid. Due to the replacement of flexible elements of a grid with flat plates that divide the flow into separate jets, it became poss...

We studied the reasons of the formation of local scours in the Cheboksary hydrosystem tailrace on the Volga river. To determine the parameters of the scour basin, we calculated the spatial conjugation of the races in MathCad application software environment. The morphological analysis of soft shells allowed us to establish characteristics of mobile baffles required for protection of the hydrosystem tailraces from scouring. For the formation of an induced vortex flow directed opposite to the channel flow, we propos...