Wall-pressure Fluctuations and Pressure-velocity Correlations in a Turbulent Boundary Layer
Title | Wall-pressure Fluctuations and Pressure-velocity Correlations in a Turbulent Boundary Layer PDF eBook |
Author | John S. Serafini |
Publisher | |
Pages | 88 |
Release | 1963 |
Genre | Fluid dynamics |
ISBN |
This experimental study was carried out at a free-stream Mach number of 0.6 and a Reynolds number per foot of 3.45 x 106. The magnitudes of the wall-pressure fluctuations agree with the Lilley-Hodgson theoretical results. Space-time correlations of the wall-pressure fluctuations generally agree with Willmarth's results for longitudinal separation distances. The convection velocity of the fluctuations is found to increase with increasing separation distances, and its significance is explained. Measurements with the longitudinal component of the velocity fluctuations indicate that the contributions to the wall-pressure fluctuations are from two regions, an inner region near the wall and an outer region linked with the intermittency.
Wall-pressure Fluctuations and Pressure-velocity Correlations in Turbulent Boundary Layer [with List of References]
Title | Wall-pressure Fluctuations and Pressure-velocity Correlations in Turbulent Boundary Layer [with List of References] PDF eBook |
Author | |
Publisher | |
Pages | 78 |
Release | 1963 |
Genre | Fluid dynamics |
ISBN |
On the Generation of Wall Pressure Fluctuations for Turbulent Boundary Layers Over Rough Walls
Title | On the Generation of Wall Pressure Fluctuations for Turbulent Boundary Layers Over Rough Walls PDF eBook |
Author | Thomas E. Burton |
Publisher | |
Pages | 63 |
Release | 1971 |
Genre | Fluid dynamics |
ISBN |
The study of pressure-velocity correlation in turbulent flow was extended to turbulent boundary layer flow over a roughened wall in the absence of a longitudinal pressure gradient. The results obtained are qualitatively similar to those previously measured over smooth walls. A theory is presented to partially explain the behavior of the measured correlations in both the smooth-wall and rough-wall cases.
Pressure Fluctuations in Turbulent Boundary Layers
Title | Pressure Fluctuations in Turbulent Boundary Layers PDF eBook |
Author | M. V. Lowson |
Publisher | |
Pages | 36 |
Release | 1965 |
Genre | Atmospheric pressure |
ISBN |
Wall-pressure Fluctuations and Pressure-velocity Correlation in Turbulent Boundary Layers
Title | Wall-pressure Fluctuations and Pressure-velocity Correlation in Turbulent Boundary Layers PDF eBook |
Author | John S. Serafini |
Publisher | |
Pages | 63 |
Release | 1963 |
Genre | |
ISBN |
Wall-pressure Fluctuations and Pressure-velocity Correlations in Turbulent Boundary Layers
Title | Wall-pressure Fluctuations and Pressure-velocity Correlations in Turbulent Boundary Layers PDF eBook |
Author | John S. Serafini |
Publisher | |
Pages | 63 |
Release | 1963 |
Genre | Turbulent boundary layer |
ISBN |
Pressure fluctuations of a turbulent layer along a plane boundary were investigated. All measurements were made at a nominal free-stream Mach number of 0.6 and an average Reynolds number per foot of 3.45 x 10 to the 6th power in a wind-tunnel facility specially designed for the purpose. The pressure fluctuations were measured with miniature pressure transducers and the velocity fluctuations with hot-wire anemometers. The rootmean-square magnitudes of the wall-pressure fluctuations agree with the Lilley-Hodgson theoretical results, whereas the mean-square spectra do not agree, except over a small range of frequencies. Measurements of the correlations of the wall-pressure fluctuations with the longitudinal component of the velocity fluctuations indicate that the contributions to the wall-pressure fluctuations are from two regions, an inner region near the wall and an outer region linked with the intermittency. (Author).
Fluctuating Properties of Turbulent Boundary Layers for Mach Numbers Up to 9
Title | Fluctuating Properties of Turbulent Boundary Layers for Mach Numbers Up to 9 PDF eBook |
Author | William D. Harvey |
Publisher | |
Pages | 60 |
Release | 1969 |
Genre | Aerodynamics, Hypersonic |
ISBN |
Fluctuating properties of turbulent boundary layers for Mach numbers up to 9.