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 Ying Xiong,Zhanzhi Wang and Wanjiang Qi.Numerical Study on the Influence of Boss Cap Fins on Efficiency of Controllable-pitch Propeller[J].Journal of Marine Science and Application,2013,(1):13-20.[doi:10.1007/s11804-013-1166-9]
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Numerical Study on the Influence of Boss Cap Fins on Efficiency of Controllable-pitch Propeller


Numerical Study on the Influence of Boss Cap Fins on Efficiency of Controllable-pitch Propeller
Ying Xiong Zhanzhi Wang and Wanjiang Qi
Ying Xiong Zhanzhi Wang and Wanjiang Qi
1. Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China 2. The 71187th Unit of People’s Liberation Army, Yantai 265800, China
boss cap fins controllable-pitch propeller open water efficiency Reynolds-averaged Navier–Stokes (RANS)
Numerical simulation is investigated to disclose how propeller boss cap fins (PBCF) operate utilizing Reynolds-averaged Navier–Stokes (RANS) method. In addition, exploration of the influencing mechanism of PBCF on the open water efficiency of one controllable-pitch propeller is analyzed through the open water characteristic curves, blade surface pressure distribution and hub streamline distribution. On this basis, the influence of parameters including airfoil profile, diameter, axial position of installation and circumferential installation angle on the open water efficiency of the controllable-pitch propeller is investigated. Numerical results show: for the controllable-pitch propeller, the thrust generated is at the optimum when the radius of boss cap fins is 1.5 times of propeller hub with an optimal installation position in the axial direction, and its optimal circumferential installation position is the midpoint of the extension line of the front and back ends of two adjacent propeller roots in the front of fin root. Under these optimal parameters, the gain of open water efficiency of the controllable-pitch propeller with different advance velocity coefficients is greater than 0.01, which accounts for approximately an increase of 1%-5% of open water efficiency.


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Supported by the National Natural Science Foundation of China under Grant No. 51079157
Last Update: 2013-03-14