Statistical properties of streamwise velocity in a supersonic turbulent boundary layer
Statistical properties of streamwise velocity in a supersonic turbulent boundary layer
Statistical properties of streamwise velocity fluctuations in a supersonic boundary layer are examined using particle image velocimetry data. The mean velocity profile reveals a logarithmic region that extends farther from the wall (compared to incompressible boundary layers), up to y/? ? 0.5. The rms velocity profiles are consistent with previous measurements reported in the literature and indicates a plateau region between y/? = 0.3 and 0.6 with a nominal second peak at y/? ? 0.6. Contours of two-point correlations are forward leaning for reference locations near the wall and become more symmetric along both streamwise and wall-normal directions as the reference location moves away from the wall. The integral length scales (Lx) and the representative length scales (?xu) reveal an increasing-decreasing trend with distance from the wall, attaining a maximum within the logarithmic region at y/? ? 0.4
098108-[4pp]
Ganapathisubramani, B.
5e69099f-2f39-4fdd-8a85-3ac906827052
September 2007
Ganapathisubramani, B.
5e69099f-2f39-4fdd-8a85-3ac906827052
Ganapathisubramani, B.
(2007)
Statistical properties of streamwise velocity in a supersonic turbulent boundary layer.
Physics of Fluids, 19, .
(doi:10.1063/1.2772303).
Abstract
Statistical properties of streamwise velocity fluctuations in a supersonic boundary layer are examined using particle image velocimetry data. The mean velocity profile reveals a logarithmic region that extends farther from the wall (compared to incompressible boundary layers), up to y/? ? 0.5. The rms velocity profiles are consistent with previous measurements reported in the literature and indicates a plateau region between y/? = 0.3 and 0.6 with a nominal second peak at y/? ? 0.6. Contours of two-point correlations are forward leaning for reference locations near the wall and become more symmetric along both streamwise and wall-normal directions as the reference location moves away from the wall. The integral length scales (Lx) and the representative length scales (?xu) reveal an increasing-decreasing trend with distance from the wall, attaining a maximum within the logarithmic region at y/? ? 0.4
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Published date: September 2007
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 187413
URI: http://eprints.soton.ac.uk/id/eprint/187413
ISSN: 1070-6631
PURE UUID: cd74f8f9-7e1e-4f1e-859c-5eac6a713d96
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Date deposited: 18 May 2011 11:57
Last modified: 15 Mar 2024 03:37
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