@inproceedings{a27d37e0e72a4908a62491def59492b5,
title = "Time-series axisymmetric base-pressure measurements with simultaneous near-wake planar visualizations",
abstract = "The relationship between time-series base-pressure measurements and planar visualizations of the large-scale features of the wake of an axisymmetric cylinder (with the axis oriented parallel to the flow direction) has been studied. High-frequency pressure measurements were obtained at two radial locations on the base, in conjunction with simultaneous planar Mie scattering visualizations at four end-view and two side-view locations in the near wake. Comparison of the base-pressure measurements closest to the separation corner and end-view imaging locations before and at reattachment indicates that higher pressures correspond to larger instantaneous recirculation region areas (as defined by the total area enclosed by the shear layer), while lower average pressures are linked to smaller areas. By investigating the base pressure-recirculation area relationship over short time segments immediately preceding and following the imaging time, it is found that the correlated base pressure-area events occur at low frequency (< 1 kHz). This behavior suggests that the fluctuations in the area of the recirculation region are related to the high energy content previously found at 850 Hz in the base-pressure power spectral density function for this radial location.",
author = "Cannon, {Patricia M.} and Elliott, {Gregory S.} and {Craig Dutton}, J.",
year = "2005",
doi = "10.2514/6.2005-5285",
language = "English (US)",
isbn = "9781624100598",
series = "35th AIAA Fluid Dynamics Conference and Exhibit",
publisher = "American Institute of Aeronautics and Astronautics Inc.",
booktitle = "35th AIAA Fluid Dynamics Conference and Exhibit",
note = "35th AIAA Fluid Dynamics Conference and Exhibit ; Conference date: 06-06-2005 Through 09-06-2005",
}