On the Vortex Detection Method Using Continuous Wavelet Transform with Application to Propeller Wake Analysis

Lifeng Wang, Ruifeng Hu, Jun Zhang and Yunpeng Ma

Mathematical Problems in Engineering, 2015, vol. 2015, 1-9

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.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:242917

DOI: 10.1155/2015/242917

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