Author: Agastya Balantrapu
Last saved by: Padma Carstens

Title of Dataset: Experimental data to accompany the paper ‘The structure of a highly-decelerated axisymmetric turbulent boundary layer’ Journal of Fluid Mechanics, In press, 2021.
Author(s): N. Agastya Balantrapu; William Devenport; Christopher Hickling; W. Nathan Alexander;
Corresponding Author Email Address: devenport@vt.edu
Categories: 090101 Aerodynamics
Group: Center for Renewable Energy and Aero/Hydrodynamic Technology
Item Type: Dataset
Keywords: Turbulent boundary layer measurements, Aerodynamics, hydrodynamics, turbulent flows, vehicle boundary layers, adverse pressure gradient flows, axisymmetric boundary layer measurements
Description 
This dataset accompanies the paper ‘The structure of a highly-decelerated axisymmetric turbulent boundary layer’, Balantrapu N. A., Hickling. C., Alexander W. N., Devenport W. J., Journal of Fluid Mechanics, in press, 2021. The turbulent boundary layer over an axisymmetric body, relevant to vehicular configurations, is documented and studies to discover the underlying physics in addition supplying information towards advancing turbulence modelling and aeroacoustics predictions. Measurements of the mean flow, turbulence and correlation structure were documented using hotwire anemometry and Particle Image Velocimetry and are discussed in the stated publication. Here, the relevant data are presented.
Funding:
Sponsor: Office of Naval Research
Program managers: Dr. Ki-Han Kim, and Dr. John Muench; 
ONR grant numbers: N00014-17-1-2698, N00014-20-1-2650.
Resource Title: The structure of a highly-decelerated axisymmetric turbulent boundary layer, Journal of Fluid Mechanics, 2021
Resource DOI: 10.1017/jfm.2021.845
Other References: The Space-time Structure of an Axisymmetric Turbulent Boundary Layer Ingested by a Rotor  https://vtechworks.lib.vt.edu/handle/10919/103258
License: CC-0
Publisher: University Libraries, Virginia Tech
Language: English
Location: Virginia Tech Stability Wind Tunnel, Blacksburg, Virginia, US.

Files/Folders in Dataset and Description of Files

1.	DataDescription.xlsx
A Microsoft Excel sheet that describe each of the Data files including the nomenclature and organization, and a brief overview of the measurement. For each dataset a sample code is included to assist the users with accessing and plotting the data. While basic details about the apparatus and hotwire are mentioned in the worksheets, users are redirected to the companion publication, The structure of a highly-decelerated axisymmetric turbulent boundary layer’ Journal of Fluid Mechanics, In press, 2021. 
2.	Velocity_Statistics&Spectra_Hotwire.mat 
Velocity statistics and spectra over the body-of-revolution (BOR) tail cone with a constant temperature hotwire anemometer. Profiles at 15 streamwise stations are documented, with mean streamwise velocity, turbulent stress, and velocity spectra documented. For full details refer DataDescription.xlsx. 
3.	 Velocity_Statistics_PIV.mat
Statistics of the axial and radial velocity measured with planar Particle Image Velocimetry. Included are the mean velocity and the Reynolds stresses across the measurement domain, spanning the rear third of the BOR tail-cone. Refer DataDescription.xlsx for nomenclature, organization of data. A sample MATLAB code Code_Statistics_PIV.m, see below, is also included.
4.	Velocity_RadialCorrelations_Hotwire.mat 
Two point radial correlations of the streamwise velocity, measured at the BOR tail, with a fixed-probe and moving probe arrangement. Refer DataDescription.xlsx for the contents, nomenclature and organization of this file. Also, see a sample code Code_Correlations_Hotwire.m below to assist users in handling the data. 
5.	Velocity_CircumferentialCorrelations_Hotwire.mat 
Two point circumferential correlations of the streamwise velocity, measured at the BOR tail, with a fixed-probe and moving probe arrangement. Refer DataDescription.xlsx for the contents, nomenclature and organization of this file. Also, see a sample code Code_Correlations_Hotwire.m below to assist users in handling the data. 
6.	Code_StatisticsandSpectra_Hotwire.m
MATLAB script to assist users in handling the datafile Velocity_Statistics&Spectra_Hotwire.mat 
7.	Code_Statistics_PIV.m 
MATLAB script to assist users in handling the datafile Velocity_Statistics_PIV.mat
8.	Code_Correlations_Hotwire.m 
MATLAB script to assist users in handling the datafile Velocity_RadialCorrelations_Hotwire.mat and Velocity_CircumferentialCorrelations_Hotwire.mat