**5. Conclusion**

A computational analysis of trailing edge bluntness vortex shedding noise for 2 MW horizontal axis turbine was performed for trailing edge thicknesses of 0.1% and 0.5% local chord using original BPM model. The original BPM results for trailing edge bluntness noise showed that for a trailing edge thickness of 0.1% and 0.5% chord length the effect on sound power level was found to be 83 dB, 92 dB and 95 dB and 115 dB at wind speeds of 7 m/s and 10 m/s respectively. At 10 kHz region turbulent boundary layer vortex shedding noise masks all other self-noise mechanisms. Finally, the existing overall sound power level (OSPL) experimental data showed very good agreement with simulated outputs for the trailing edge bluntness noise at wind speeds 7 m/s 8 m/s and 10 m/s respectively. The original BPM results for trailing edge bluntness noise showed that for a trailing edge thickness of 0.1% chord the effect on 1/3rd octave overall A weighted sound level was found as a peak hump with an amplitude of 90 dBA near 10 kHz region and masks all other self-noise mechanisms. The modified BPM results for trailing edge bluntness noise also showed a sharp peak instead of a hump but the amplitude reduced by 15 dBA at 8 kHz in noise spectra. The new thickness correction function predicted the peak amplitude of trailing edge bluntness more accurately compared to original and modified BPM.
