To enable the broadband noise sources models, select
Broadband Noise Sources in the
Acoustics Model panel (Figure
Figure 21.4.1: The
Acoustics Model Panel for Broadband Noise
Setting Model Constants
Model Constants in the
Acoustics Model panel, specify the relevant acoustic parameters and constants used by the model. See Section
21.3.1 for the definitions of
Far-Field Density and
Far-Field Sound Speed.
Reference Acoustic Power
21.2-13) is used to compute the acoustic power outputs in decibels (dB). The default value is
. Note that the units for the reference acoustic power will be different in 2D (
) and 3D (
Number of Realizations
is the number of samples used in the SNGR to compute the averaged source terms of LEE and Lilley's equations. The default value is 200.
Number of Fourier Modes
21.2-33) is the number of the Fourier modes used to compute the turbulent velocity field and its derivatives. The turbulent velocity field is then used to compute the LEE and Lilley's source terms. The default value is 50.