University of Southampton, ISVR, Chaitanya Paruchuri, ccp1m17@soton.ac.uk

The *.mat files contains the experimental data for the paper. In particular:

Figure4: Comparison between the measured axial velocity spectra and theoretical Liepmann spectra.

Figure5: Comparison of noise reduction spectra (compared to straight leading edge) between sinusoidal and sawtooth leading edge serrations.

Figure6: Influence of jet velocity on noise reductions of slitted-root serrations of slit width $w/\lambda=0.133$, slit amplitude $h_s/2h=0.64$ and serration amplitude $h/c_0=0.167$.

Figure7: Additional sound power reduction comparisons for a slitted-root serration for varying slit width $w/\lambda$ at fixed slit amplitude $h_s/c_0=0.133$, serration amplitude ($h/c_0=0.167$) at jet velocity of 60 $m/s$.

Figure8: OAPWL versus $w/\lambda$ for a slitted-root serration for varying slit width $w/\lambda$ at fixed slit amplitude $h_s/c_0=0.133$, serration amplitude $h/c_0=0.1$ at jet velocity of 60 $m/s$.

Figure9: Additional noise reductions $\Delta PWL_A$ versus non-dimensional frequency $\omega/\omega_0$ for a serration ampltiude $h/c_0$=0.167, wavelength $\lambda/c_0$=0.1 and jet velocity $U$=60 m/s.

Figure10: Overall sound power reductions $OA\Delta PWL$ versus $h_s/2h$ for a serration amplitude $h/c_0$=0.167, wavelength $\lambda/c_0$=0.1 and jet velocity $U$=60 m/s.

Figure11: Comparison between analytic and experimental noise reductions for three different slitted serrations of $h_s/2h=0.4,0.7$ and 1 ($h_s^*/h_s=1.15, 0.95, 0.75$), at a fixed $w/\lambda=0.133$, $2h/c_0$=0.33, $\lambda/c_0=0.1$ at jet velocity U=60 $m/s$.

Figure12: Source strength $r$ versus $h_s/2h$ (Black line) and ratio of effective slit height to actual slit height calculated from the measured data (Red line) .

Figure13: Source strength $r$ versus $w/\lambda$ calculated from the measured data.

Figure14: Sound power reduction comparisons for a slitted serration on flat plate and aerofoil of amplitude ($h/c_0=0.167$), $w/\lambda=0.133$, $h_s/2h=1$ at jet velocity of 60 $m/s$.


In addition folders Processed folder which contains the mat files of the processed data for the whole test campaign. It contains a total of 40 cases used in the current paper with 4 different flow velocities. 

Date of data collection: from January 2016 - July 2017

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

Date that the file was created: June 2018