PARAM, ALPHA2FL

Bulk Data Entry Adds Rayleigh damping to viscous damping for fluid mesh.

Parameter	Values	Description
`ALPHA2FL`	<Real> Default = 0.0	PARAM, `ALPHA2FL` is used in frequency and transient response analysis. If PARAM, ALPHA1FL and/or PARAM, `ALPHA2FL` are not equal to zero, then Rayleigh damping is added to the viscous damping.`ALPHA1FL` is the scale factor applied to the mass matrix and `ALPHA2FL` to the fluid stiffness matrix as in: $[B'] = [B] + A L P H A 1 F L \cdot [M] + A L P H A 2 F L \cdot [K]$

Parameter

Values

Description

ALPHA2FL

<Real>

Default = 0.0

PARAM, ALPHA2FL is used in frequency and transient response analysis.

If PARAM, ALPHA1FL and/or PARAM, ALPHA2FL are not equal to zero, then Rayleigh damping is added to the viscous damping.ALPHA1FL is the scale factor applied to the mass matrix and ALPHA2FL to the fluid stiffness matrix as in:

$[B'] = [B] + A L P H A 1 F L \cdot [M] + A L P H A 2 F L \cdot [K]$