of horizontal axis marine current turbine

 

 

ZHU Bin1,2, ZHENG Di1,2, QIAO Feng1, CHEN Junhua2

 

(1. Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China; 2. School of

Mechanical and Energy Resource Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China)

 

 

Abstract: Aiming at the design problem of dedicated airfoil of horizontal axis marine current turbine, the flow field, the mechanism of energy capture, the lift/drag coefficient and the shear stress in the x direction were researched, the shortage of aviation airfoils and special wind turbine airfoils in terms of the capture of the impact energy was investigated, a method was presented to design the dedicated airfoil for horizontal axis marine current turbine, both the differential pressure lift and impact forces could be comprehensive used, the efficiency of energy harvesting could be improved. The software of Matlab was used to calculate the blade shape parameters, the blade was produced by the CNC of Cincinnati and was tested on the experiment platform, the data of power generation were recorded. The results indicate that increase the camber of airfoil can effectively improve the performance of launch and efficiency capture, the correctness and validity of the design mothed was proven.

 

Key words: tidal current energy; airfoil; differential pressure lift; impact force; performance of selfstarting; efficiency of energy harvesting