PARAM, SPLFAC

Bulk Data Entry Specifies the scale factor (q) used to calculate the Sound Pressure Level in Radiated Sound Analysis.

Parameter	Values	Description
`SPLFAC`	< Real > 0.0 > Default = 1.0	This parameter specifies the scale factor (q) used to calculate the Sound Pressure Level in Radiated Sound Analysis. The equation used for the calculation is: Sound Pressure Total Complex Acoustic Sound Pressure requested by SPL is: $p_{total} (f) = \sum_{j = 1}^{np} (\frac{f ρ q}{r_{j}} {[V_{flux} (f)]}_{j} {ie}^{- i k r_{j}})$ Where, f is the frequency of the sound wave in the medium. $ρ$ is the density of the acoustic medium defined by PARAM, SPLRHO. r_j is the distance from the acoustic source grid j on the panel to the microphone location grid (see Figure 1). ${[V_{flux} (f)]}_{j}$ is the velocity flux of the source grid j. k is the wave number as defined in Wave Number. i is the square root of -1. np is the number of source grids q is the value of the scale factor specified using the parameter PARAM, `SPLFAC`.

Parameter

Values

Description

SPLFAC

< Real > 0.0 >

Default = 1.0

This parameter specifies the scale factor (q) used to calculate the Sound Pressure Level in Radiated Sound Analysis. The equation used for the calculation is:

Sound Pressure

Total Complex Acoustic Sound Pressure requested by SPL is:

p_{total} (f) = \sum_{j = 1}^{np} (\frac{f ρ q}{r_{j}} {[V_{flux} (f)]}_{j} {ie}^{- i k r_{j}})

Where,

f is the frequency of the sound wave in the medium.

$ρ$ is the density of the acoustic medium defined by PARAM, SPLRHO.

r_j is the distance from the acoustic source grid j on the panel to the microphone location grid (see Figure 1).

${[V_{flux} (f)]}_{j}$ is the velocity flux of the source grid j.

k is the wave number as defined in Wave Number.

i is the square root of -1.

np is the number of source grids

q is the value of the scale factor specified using the parameter PARAM, SPLFAC.