De Kat, Roeland, Gan, Lian, Fiscaletti, Daniele, Dawson, James and Ganapathisubramani, Bharathram (2017) Wide-field Time-resolved Particle Image Velocimetry data of a turbulent boundary layer. University of Southampton doi:10.5258/SOTON/D0297 [Dataset]
Abstract
This dataset should be requested by completing the form at http://library.soton.ac.uk/datarequest Size of dataset:100 GB (37 GB as a tar archive) This dataset consists of time-resolved PIV data of a turbulent boundary layer over a wide field of view with very good spatial and temporal resolution. The data is only available for the bottom half of the boundary layer. In each Run, each vector field is stored in a .mat file (Matlab). The time delay between each vector field is 0.001 second (1kHz acquisition frequency). The name of the files in each Run contains a number, from 1 to 5004 (except for Run 5, which contains files numbered from 1 to 4883). The file number represents the acquisition order (1 is the first). Each file contains 4 matrices, X, Y, U, V. X and Y are the coordinates of the vectors stored in the matrices of the velocity vectors, U and V. U is the matrix containing the streamwise components of the velocity field, while V is the matrix containing the wall-normal components of the velocity field. The measurement units are in the international system, therefore the coordinates are in meters, while the components of the velocity vectors are in meters per seconds. Data in the matrices are ordered such that increasing rows in the matrices represent increasing wall-normal positions, and increasing columns in the matrices represent increasing streamwise distances. The characteristics of the turbulent boundary layer flow are the following. Free-stream velocity, U_{\inf} = 0.67 m s−1 ; boundary layer thickness, δ = 0.1 m; friction velocity, Uτ = 0.027 m/s; and the Reynolds number, Re_\tau = 2700. If you use this dataset, please cite the following papers: 1) de Kat, R & Ganapathisubramani, B (2015) Frequency-wavenumber mapping in turbulent shear flows. J Fluid Mech 783:166–190. doi:10.1017/jfm.2015.558. 2) Fiscaletti, D, de Kat R, Ganapathisubramani, B (2018), Spatial-spectral characteristics of momentum transport in a turbulent boundary layer. doi:10.1017/jfm.2017.841
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