Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration

More and more activities have caused significant damage to the river environment, among which a typical problem of blocked fish migration is constantly attracting people’s attention. Nowadays, fishways are essential hydraulic facilities solve such problems. Although different fishway has particular blocking effect on water flow, flow velocity vital positions in could still be relatively high locally, may pose certain challenge (the higher lead increase migratory energy consumption fish). Therefore, further exploration passing required. As check valve without movable parts, Tesla expected used because its substantial obstruction reverse internal fluid. This paper conducted numerical simulation experiments passage pipeline designed based valves using RNG (renormalization group) k-ε model. Grass carp were selected as primary analysis object, results analyzed from perspective turbulence characteristics. The showed that T45-R was better than GMF (Gamboa, Morris Forster) control. at position fluid about 20% lower GMF. cloud diagram apparent high-velocity low-velocity areas valve. area for upstream, maximum variation range this 0.904~1.478 m/s. At same time, almost static water. illustrated resulting environment provide conditions grass move upstream successfully. turbulent kinetic inside value only 0.043 m2/s2, friendly upstream. In addition, show pressure-related problems not seem an excessive impact migration, causing damage. Overall, studied feasibility pipeline.