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Viscous Stability Analysis of Trailing Line Vortex

Title:

Viscous Stability Analysis of Trailing Line Vortex

Ebrahim nataj jelodar, Hamzeh (2013) Viscous Stability Analysis of Trailing Line Vortex. Masters thesis, Concordia University.

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Abstract

This piece of work deals with the viscous stability of trailing line vortex. The perturbations are three dimensional and the viscous effects were encountered. The eigenvalue problem was solved by implementing a pseudo-spectral approach in MATLAB environment. The code was confirmed through comparing the results with those available in the literature, produced with Bachelor’s vortex model as base flow.
The code was afterwards used to investigate the stability of trailing line vortex where the azimuthal component of the base flow was the one of Vatistas’ vortex model. The stability of the linear modes (Kelvin’s waves) was investigated for axisymmetric and asymmetric disturbances. Results for the temporal viscous unstable modes were provided. The influence of swirl parameter and Reynolds number on the growth rate, phase speed and amplitude, of the perturbations were studied.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Ebrahim nataj jelodar, Hamzeh
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical Engineering
Date:8 April 2013
Thesis Supervisor(s):Vatistas, G. H. and Abderrahmane, H. A.
Keywords:vortex model, Kelvin waves, stability analysis, pseudo-spectral method, trailing line vortex.
ID Code:977105
Deposited By: HAMZEH EBRAHIM NATAJ JELODA
Deposited On:07 Jun 2013 15:03
Last Modified:18 Jan 2018 17:43
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