Author(s)

Mingyu Zhang, Weiqiang Yu, Zhongwei Chen

Corresponding Author

Mingyu Zhang

ABSTRACT

The rotor blade load decreases successively from shroud to hub with pumpjet operation, so reasonably control of blade area can improve the load distribution of rotor. This paper makes related research on the problem how the change of meridional a ngle between the rotor leading edge and trailing edge influence the hydraulic performance and structural strength. 3 pump jets were designed consists of improved No.19A duct and rotor, stator designed based on 3-D inverse design method, all the blades were thickened based on NACA airfoil. Open water hydraulic characteristics and structural strength of 3 pump jets were calculated and compared after implementing the reliability demonstration of numerical simulation. Results show that, based on the same power, duct and meridional area of rotor blade, an appropriate increase of meridional angle can improve the pumpjet hydraulic performance in safety of intensity.

KEYWORDS

The rotor blade, the hydraulic performance, structural strength, the pumpjet hydraulic performance