Conference_programme: 4.1 - Airport Noise
Lecture: A new through-flow analysis method of axial flow fan with noise models
Author(s): Lee Chan , Kil Hyun Gwon
Summary:
The present paper provides a new through-flow analysis method of axial flow fan, which is coupled with discrete frequency and broadband noise models to predict fan's aero-acoustic performances . The present through-flow analysis method calculates pitch-averaged flow velocity, angle and blade surface boundary layer thickness distributions along blade span, and then the calculated flow results are used for noise models to compute the sound pressures of the discrete frequency noise components due to steady rotating and blade interaction forces as well as the spectral density functions of broadband noise sources due to inflow turbulence, blade boundary layer and wake flows. The present method is applied to several axial flow fan cases, and its overall noise level and noise spectrum prediction results are favorably compared with the measurement data within a few percent of relative error.
Corresponding author
Name: Prof Chan Lee
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: N/A
