READ ME File For 'Dataset for "Quadrupole noise generated from a low-speed aerofoil in near- and full-stall conditions"'

Dataset DOI:10.5258/SOTON/D2095 

ReadMe Author: Jacob Turner, University of Southampton (https://orcid.org/0000-0002-0522-4340)

This dataset supports the publication: 
Jacob Turner and Jae-Wook Kim
Quadrupole noise generated from a low-speed aerofoil in near- and full-stall conditions
Journal of Fluid Mechanics, 2022

This dataset contains:
The ACSII (.dat) files and binary Tecplot (.plt) data files that were used to generate the figures in the paper.
The Tecplot layout (.lay) files which can be used to visualise the plots.
The graphic software Tecplot 360 EX can be downloaded for free (fixed-period trial version) from:
http://www.tecplot.com/my/free-trial-software/tecplot-360/
There are six archive files:

fig1.7z: figure 1 data and tecplot layout
fig4.7z: figure 4 data and tecplot layout
fig2-9.7z: data and tecplot layouts for figures 2 to 9
fig10_layout_lowf_data.7z: tecplot layout and low frequency data for figure 10
fig10_highf_data.7z: high frequency data for figure 10
fig11-22.7z: data and tecplot layouts for figures 11 to 22

The title of the files corresponds to the figure numbers in the paper.

fig1: Flow visualisation (3D x-vorticity)
fig2: Computational grid
fig3: Grid statistics
fig4: FWH surfaces and q-criterion iso-surfaces
fig5: FWH validation (permeable surface comparisons)
fig6: FWH validation (comparison to a probe)
fig7: Acoustic pressure spectra for dipole and dipole+quadrupole predictions
fig8: Sound directivity patterns for M=0.4
fig9: Filtered fluctuating pressure contours (2D slices)
fig10: Filtered fluctuating pressure contours (3D iso-surfaces)
fig11: Acoustic pressure spectra at four observer locations (dipole, quadrupole and total)
fig12: Dilatation field and q-criterion for M=0.3
fig13: Acoustic pressure spectra comparison for M=0.3 and 0.4
fig14: Increase in total noise due to quadrupole sources
fig15: Sound directivity patterns for M=0.3
fig16: Mach number scaled exponents based on Sta and Stu
fig17: Velocity and Dilatation fields for three angles of attack (5deg, 10deg and 15deg)
fig18: Acoustic pressure spectra comparison for three angles of attack (solid and permeable FWH solutions)
fig19: Increase in total noise due to quadrupoles for three angles of attack
fig20: Acoustic pressure spectra scaled by local Mach number values
fig21: Time averaged mach number contours
fig22: Grid and signal length convergence tests

Date of data collection: Dec 2018 to Nov 2021

Information about geographic location of data collection: University of Southampton, U.K.

Licence: creative commons attribution 4.0 international

Related projects:

EP/R010900/1 (Effect of Separation and Stall on Aerofoil Noise)

Date that the file was created: Jan, 2022