On the Vortex Detection Method Using Continuous Wavelet Transform with Application to Propeller Wake AnalysisReport as inadecuate




On the Vortex Detection Method Using Continuous Wavelet Transform with Application to Propeller Wake Analysis - Download this document for free, or read online. Document in PDF available to download.

Mathematical Problems in Engineering - Volume 2015 2015, Article ID 242917, 9 pages -

Research Article

School of Aeronautic Science and Technology, Beihang University, Beijing 100191, China

School of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, China

China Ship Scientific Research Center, Wuxi 214082, China

Received 27 December 2014; Revised 12 May 2015; Accepted 19 May 2015

Academic Editor: Dane Quinn

Copyright © 2015 Lifeng Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The method based on the continuous wavelet transformation to detect and characterize two-dimensional vortex is analyzed for a synthetic flow and applied to vortex detection of propeller wake. The characteristics of a vortex, such as center location, core radius, and circulation, are extracted based on the Lamb-Oseen and Rankine vortex models, the latter of which is a novel attempt. The effects of various factors such as the difference scheme, the grid and scale discretization, transform variable, and vortex model on vortex detection have been investigated thoroughly. The method is further applied to identify the tip vortex in a propeller wake.





Author: Lifeng Wang, Ruifeng Hu, Jun Zhang, and Yunpeng Ma

Source: https://www.hindawi.com/



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