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This paper investigates the relations between the fluctuating pressure and velocity of the source by means of nu- merical method and sound pressure in the far field obtained with an noise experiment for a novel cross flow fan. The frequency characteristics of the fluctuating pressure and velocity in a cross flow fan are analyzed by means of spectral analysis and wavelet transform.The fluctuating pressures obtained by large eddy simulation on the cas- ing wall are compared with that of experiments and show good agreement.From the spectral analysis of sound source,it is found that the pressure fluctuating peak is correspond with the sound pressure in the far field.
This paper investigates the relations between the fluctuating pressure and velocity of the source by means of nu-merical method and sound pressure in the far field obtained with an noise experiment for a novel cross flow fan. The frequency characteristics of the fluctuating pressure and velocity in a cross flow fan are analyzed by means of spectral analysis and wavelet transform. fluctuating strains obtained by large eddy simulation on the cas- ing wall are compared with that of experiments and show good agreement. Flash the spectral analysis of sound source, it is found that the pressure fluctuating peak is correspond with the sound pressure in the far field.