Viscous instability of a compressible round jet
Viscous instability of a compressible round jet
The compressible linear stability equations are derived from the Navier Stokes equations in cylindrical polar coordinates. Numerical solutions for locally parallel flow are found using a direct matrix method. Discretization with compact finite difference is found to have better convergence properties than a Chebyshev spectral method for a round jet test case. The method is validated against previous results and convergence is tested for a range of jet profiles. Finally and en method is used to determine the dominant frequency of a Mach 0.9 jet.
University of Southampton
Salgado, Adriana M.
b091b999-b98e-4b7d-92d8-723c3bf5ad33
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97
2007
Salgado, Adriana M.
b091b999-b98e-4b7d-92d8-723c3bf5ad33
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97
Salgado, Adriana M. and Sandham, Neil D.
(2007)
Viscous instability of a compressible round jet
(School of Engineering Sciences Aerospace Engineering AFM Reports, AFM 07/01)
Southampton, UK.
University of Southampton
43pp.
Record type:
Monograph
(Project Report)
Abstract
The compressible linear stability equations are derived from the Navier Stokes equations in cylindrical polar coordinates. Numerical solutions for locally parallel flow are found using a direct matrix method. Discretization with compact finite difference is found to have better convergence properties than a Chebyshev spectral method for a round jet test case. The method is validated against previous results and convergence is tested for a range of jet profiles. Finally and en method is used to determine the dominant frequency of a Mach 0.9 jet.
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AFM_07_01.pdf
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Published date: 2007
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 44839
URI: http://eprints.soton.ac.uk/id/eprint/44839
PURE UUID: 9f8a672f-70c9-49dd-b1e2-3c2c608f2faa
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Date deposited: 21 Mar 2007
Last modified: 16 Mar 2024 03:03
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Contributors
Author:
Adriana M. Salgado
Author:
Neil D. Sandham
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