The 12th International Conference on Hydrodynamics
18 – 23 september 2016, Egmond aan Zee, The Netherlands
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NUMERICAL AND EXPERIMENTAL INVESTIGATIONS ON UNSTEADY CAVITATION OF A CP PROPELLER


Go-down ichd2016 Tracking Number 136

Presentation:
Session: Cavitation and cavitating flows III
Room: Room 1
Session start: 10:30 Thu 22 Sep 2016

Jian-qiang Wang   wjq369889@163.com
Affifliation:

Ju Ding   dingju708@139.com
Affifliation:

Hai Yu   hai_yu2004@hotmail.com
Affifliation:

Yue-jin Cai   cai_yj@maric.com.cn
Affifliation:


Topics: - Cavitation and cavitating flows

Abstract:

This paper presents results of the numerical and experimental investigations of the cavitation characteristics of a high-skew CP propeller in the usual design and off-design conditions. The computations are carried out with RANS and LES solutions using a cavitation model based on a two-phase mixture formulation. The computations of unsteady non-uniform inflow conditions at two different pitch settings are carried out. Compared with experimental observations, the computational results of RANS solutions closely reproduce the main features of cavity patterns under the design pitch condition. The cavity pattern obtained by RANS model is a little smaller than the experimental result. LES model gives a better cavity pattern at the tip area. Under the off-design condition the face tip-vortex cavitation are observed in the experiment. The results obtained by RANS and LES model show an acceptable cavity pattern in comparison with the experiment.