For about seventy years, noise generated by grazing flow past a cavity has been thoroughly studied. Yet, a coherent theory that describes such phenomena is missing. Lately, this phenomena started to be investigated in bleeding systems of aero-engines. The present work, within the CARE (Cavity Acoustics and Rossiter modEs) program, aims at identifying potential resonances and excitations which could lead to a failure of the components in the LPC (Low Pressure Compressor). Specifically, the purpose is to validate the experimental results derived at KTH Heat and Power Technology department. After a literature review and turbulence model study, the wind tunnel and the cavity are analyzed.