COMSOL Multiphysics - Multiphysics Modeling

COMSOL Model Report

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1. Geom1

Space dimensions: 2D

Independent variables: x, y, z

1.1. Mesh

1.1.1. Mesh Statistics

Number of degrees of freedom58832
Number of mesh points14816
Number of elements29200
Triangular29200
Quadrilateral0
Number of boundary elements432
Number of vertex elements12
Minimum element quality0.701
Element area ratio0.001

mesh_section_0_0

1.2. Application Mode: Pressure Acoustics (acpr)

Application mode type: Pressure Acoustics (Acoustics Module)

Application mode name: acpr

1.2.1. Scalar Variables

NameVariableValueDescription
freqfreq_acpr100Excitation frequency
kzkz_acpr0Out-of-plane wave number
p_ip_i_acprexp(-i*k_acpr*x)Incident pressure wave
p_refp_ref_acpr20e-6Pressure reference

1.2.2. Application Mode Properties

PropertyValue
Default element typeLagrange - Quadratic
Analysis typeTime-harmonic
DampingOff
Specify eigenvalues usingEigenfrequency
Solve forTotal wave
Symmetry plane x=0Off
Symmetry type for x=0Symmetry
Symmetry plane y=0Off
Symmetry type for y=0Symmetry
FrameFrame (ref)
Weak constraintsOff

1.2.3. Variables

Dependent variables: p

Shape functions: shlag(2,'p')

Interior boundaries not active

1.2.4. Boundary Settings

Boundary 1, 32
Type Radiation conditionRadiation condition
Pressure source (p0)Pa00
Inward acceleration (nacc)m/s200
Source location, x coordinate (x0)m22
Source location, y coordinate (y0)m224
wavetype1PLCYL

Boundary4-678
TypeSound hard boundary (wall)Radiation conditionRadiation condition
Pressure source (p0)000
Inward acceleration (nacc)000
Source location, x coordinate (x0)4174
Source location, y coordinate (y0)484
wavetypeCYLCYLPL

Boundary9-12
TypeNormal acceleration
Pressure source (p0)10*cos(2*pi*f0*t)
Inward acceleration (nacc)1
Source location, x coordinate (x0)0
Source location, y coordinate (y0)0
wavetypePL

1.2.5. Subdomain Settings

Subdomain 1
Fluid density (rho)kg/m3rho0
Speed of sound (cs)m/sc0

2. Postprocessing

post_0