Application of magnus effect and lift blade in high altitude wind power

Abstract

A high-altitude wind power generation system scheme is proposed. The cylindrical airship is surrounded by the lifting blade of H-type vertical axis wind turbine.The blades are used to drive the airship to rotate. The airship rotating under the wind has a magnus effect, and the generated lift maintains the floating state of the airship. The paper establishes its 2D numerical simulation model. The turbulence scheme adopts SST K-ω and the y+ value is controlled between 5∼10. The slip grid method is used to calculate the parameters when the model has a Compactnessl degree of 0.4, and the airship’s lift-to-drag ratio is 7 and power coefficient is 13%, the corresponding tip speed ratio is 2.33. Then in this tip speed ratio, the working condition of the wind turbine at 3∼24m/s wind speed is analyzed. It is found that the power coefficient increases slowly to 16% and the lift-to-drag ratio is between 4∼7. Comparing the torque coefficient difference between the scheme and the H-type wind turbine, it is found that it performs negative work at most moments on the leeward side. The streamline diagram and pressure cloud diagram of the airship blades at different azimuth angles are analyzed, which explains the reason why the airship reduces the thrust and generates lift. It is concluded that the scheme has certain rationality.