Journal of Applied Mechanical Engineering

Research on sheet cavitation numerical prediction and estimation of tip vortex cavitation inception of ducted propeller with pre-swirl stator

Global Summit and Expo on Fluid Dynamics & Aerodynamics

August 15-16, 2016 London, UK

Zhengfang Qian and Jingwei Jiang

Naval Academy of Armament, Beijing, China

Scientific Tracks Abstracts: J Appl Mech Eng

Abstract:

In the paper, the research on sheet cavitation numerical predicted and estimation of tip vortex cavitation inception of ducted propeller with pre-swirl stator behind underwater vehicle was carried out. Firstly, the sheet cavitation shape of ducted propeller with pre-swirl stator was numerically simulated using a hybrid mesh based on RANS (Reynolds Averaged Navier Stokes) solver. A Singhal cavitation model based on transport equation was coupled in the RANS solver. The predicted sheet cavitation shapes were in good agreement with experimental observation. The overall results suggest that the present approach on predicting sheet cavitation shape of propeller behind underwater vehicle is practicable. Secondly, the wetted flow of ducted propeller with pre-swirl stator behind underwater vehicle was simulated, and the tip vortex cavitation inception was estimated based on the minimum pressure value on the propeller tip section. The results were also in good agreement with experimental results. It showed that the approach on estimation of tip vortex cavitation inception is feasible.

Biography :

Zhengfang Qian has completed his Master’s degree in 2000. He is a Professor at Naval Academy of Armament. His major is Marine Propeller. He has published more than 20 papers in reputed journals and has been serving as an Editorial Board Member of repute.

Email: 13641231973@163.com