Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
MODEL SCALE PROPELLER TIP VORTEX ASSESSMENT USING VORTEX IDENTIFICATION METHODS
Submission Author:
Fillipe R. L. Esteves , SP , Brazil
Co-Authors:
Fillipe R. L. Esteves, Joao Lucas Dozzi Dantas Dantas
Presenter: Fillipe R. L. Esteves
doi://10.26678/ABCM.COBEM2019.COB2019-1619
Abstract
The investigation of vortex distribution pattern is an important issue in marine propeller design, as it may lead to improvements in performance and hydro-acoustics properties. The velocity field and its derivatives obtained from CFD simulations of a marine propeller designed to the DARPA Suboff wake were analyzed in this work. The rotational field in the propeller wake was investigated for flow velocities corresponding to advance coefficients between 0.2 and 1.2, including the operation condition. The Lambda2 and Q fields were computed and vortex centers found by two vortex identification methods, enabling the quantitative comparison between different velocity conditions and analysis methods. The proposed post-processing method is capable of analyzing both experimental and numerical data.
Keywords
tip vortex, vortex dynamics, vortex identification, Darpa suboff
