Stability of time-periodic wake flow

Agrawal, M (2015) Stability of time-periodic wake flow. Masters thesis, Indian Institute of Technology Hyderabad.

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Abstract

Understanding the stability of open shear flows such as wakes and jets has important implications for flows in industry and nature. When a fluid flows past a stationary bluff body such as a cylinder, the well-known Karman vortex shedding occurs where the shed vortices align themselves in a zigzag anti-symmetric pattern. Recent experiments and numerical simulations show that if the inlet flow is oscillatory or if the cylinder oscillates about a x position, the vortex shedding pattern can sometimes be symmetric rather than asymmetric. The goal of this thesis is to gain insight into the pattern formation process resulting in a symmetric shedding pattern. This can be achieved by carrying out a stability analysis on an oscillating wake profile.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Thesis (Masters)
Uncontrolled Keywords: Rayleigh stability equation, mall frequency asymptotic analysis, TD379
Subjects: Others > Mechanics
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Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: Library Staff
Date Deposited: 09 Jul 2015 07:57
Last Modified: 09 Jul 2015 07:57
URI: http://raiith.iith.ac.in/id/eprint/1678
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