Application of Partial Coherence for Noise Source Identification in Aeroacoustic Wind Tunnel
Bo Zhu · Noise and Vibration Control · 2011
Identification of noise source is of important significance for noise control.In this paper,a multiple input/single output model for system noise identification is established.The technique of measurement of noise source contribution and partial coherence analysis are introduced and discussed.The formula of partial coherence function is given byresidual spectrum.Aiming at 0.55m×0.4m aeroacoustic wind tunnel,the measurement scheme is presented.According to the noise measurement data,the main noise source in aeroacoustic wind tunnel is identified.