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, $f$ Frequency of the sound wave in the medium. $ρ$ Density of the acoustic medium defined by PARAM, SPLRHO. $r_{j}$ Distance from the acoustic source grid $j$ on the panel to the microphone location grid. ${[V_{flux} (f)]}_{j}$ Velocity flux of the source grid $j$ . $k$ Wave number as defined in Wave Number. $i$ Square root of -1. $np$ Number of source grids. $q$ 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,

$f$: Frequency of the sound wave in the medium.
$ρ$: Density of the acoustic medium defined by PARAM, SPLRHO.
$r_{j}$: Distance from the acoustic source grid $j$ on the panel to the microphone location grid.
${[V_{flux} (f)]}_{j}$: Velocity flux of the source grid $j$ .
$k$: Wave number as defined in Wave Number.
$i$: Square root of -1.
$np$: Number of source grids.
$q$: Value of the scale factor specified using the parameter PARAM, SPLFAC.