Domain, Boundary, Edge, Point, and Pair Nodes for the Pressure Acoustics, Frequency Domain Interface
The Pressure Acoustics, Frequency Domain Interface has Domain, Boundary, Edge, Point, and Pair nodes, listed in alphabetical order, available from the Physics ribbon toolbar (Windows® users), Physics context menu (macOS or Linux® users), or right-click to access the context menu (all users). Continuity in the total pressure is the default condition on interior boundaries.
The Pressure Acoustics, Transient Interface also shares some of these nodes, with some additional features described in Domain, Boundary, Edge, and Point Nodes for the Pressure Acoustics, Transient Interface.
The Pressure Acoustics, Boundary Mode Interface also shares some of these nodes, with one additional feature described in Boundary, Edge, Point, and Pair Nodes for the Pressure Acoustics, Boundary Mode Interface. For the Pressure Acoustics, Boundary Mode interface, apply the feature to boundaries instead of domains for 3D components.
In general, to add a node, go to the Physics toolbar, no matter what operating system you are using. Subnodes are available by clicking the parent node and selecting it from the Attributes menu.
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Aeroacoustic Flow Source
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Anisotropic Acoustics
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Axial Symmetry
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Background Pressure Field
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Circular Source (for 2D Axisymmetric Components)
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Continuity
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Cylindrical Wave Radiation
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Dipole Point Source
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Dipole Domain Source
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Exterior Field Calculation
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Heat Source
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Impedance
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Incident Pressure Field
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Interior Normal Acceleration
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Interior Normal Displacement
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Interior Normal Velocity
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Interior Impedance/Pair Impedance
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Interior Perforated Plate/Pair Perforated Plate
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Interior Sound Hard Boundary (Wall)
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Interior Lumped Speaker Boundary
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Initial Values
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Line Source
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Line Source on Axis
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Lumped Port
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Lumped Speaker Boundary
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Matched Boundary
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Monopole Point Source
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Monopole Domain Source
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Narrow Region Acoustics
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Normal Acceleration
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Normal Displacement
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Normal Velocity
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Quadrupole Point Source
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Perfectly Matched Boundary
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Periodic Condition
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Plane Wave Radiation
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Point Sources (for 2D Components)
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Poroacoustics
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Port
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Pressure Acoustics
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Pressure
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Pressure (Point Condition)
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Sound Hard Boundary (Wall)
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Sound Soft Boundary
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Spherical Wave Radiation
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Symmetry
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Thermoviscous Boundary Layer Impedance
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Transfer Matrix Coupling
For axisymmetric components, COMSOL Multiphysics takes the axial symmetry boundaries (at r = 0) into account and automatically adds an Axial Symmetry node to the component that is valid on the axial symmetry boundaries only.
In the COMSOL Multiphysics Reference Manual, see Table 2-4 for links to common sections and Table 2-5 for common feature nodes. You can also search for information: press F1 to open the Help window or Ctrl+F1 to open the Documentation window.