Hydrodynamic Analysis of Vertical Axis Turbine of Double Units and Its Interference Law
In order to explore the hydrodynamic characteristics and interference law of the vertical axis power flow turbine of the double unit,the hydrodynamic load of the double turbine under constant flow is numerically calculated based on the computational fluid dynamics(CFD)method.The influence of relative spacing,initial phase angle and relative offset distance on the hydrodynamic load and performance of the two-unit turbine is studied,and the interference law is analyzed.The results show that compared with single-unit turbines,the average energy utilization rate of two-unit turbines is higher,and it gradually decreases with the increase of relative spacing.The rotation mode of the symmetrically arranged double turbine should be designed as internal rotation,when the average energy utilization rate is highest,the lateral force of the unit cancels each other.The best initial phase angle and relative offset distance exist under different rotation modes,so that the average energy utilization rate of the two units reaches the maximum.The research results can provide a basis and reference for designing the layout scheme of multi-unit vertical axis power flow power station.
vertical axis turbinetidal current energydouble unitsenergy utilizationhydrodynamic analysis
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