Domain, Boundary, Edge, Point, and Pair Nodes for the Electromagnetic Waves, Frequency Domain Interface
The Electromagnetic Waves, Frequency Domain Interface has these domain, boundary, edge, point, and pair nodes and subnodes. The nodes are listed in alphabetical order and are available from the Physics ribbon toolbar (Windows users), Physics context menu (Mac or Linux users), or by right-clicking to access the context menu (all users).
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.
Domain
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Archie’s Law
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Divergence Constraint
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External Current Density
•
Specific Absorption Rate
•
Far-Field Domain
•
Initial Values
•
Effective Medium
•
Wave Equation, Electric
•
Impedance Boundary Condition
•
Perfect Electric Conductor
Boundary Conditions
With no surface currents present, the boundary conditions
need to be fulfilled. Because E is being solved for, the tangential component of the electric field is always continuous, and thus the first condition is automatically fulfilled. The second condition is equivalent to the natural boundary condition
and is therefore also fulfilled. The following conditions are available (listed in alphabetical order):
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Diffraction Order
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Electric Field
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Far-Field Calculation
•
Four-Port Network
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Impedance Boundary Condition
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Layered Impedance Boundary Condition
•
Layered Transition Boundary Condition
•
Lumped Element
•
Lumped Port
•
Magnetic Field
•
Orthogonal Polarization
•
Perfect Electric Conductor
•
Perfect Magnetic Conductor
•
Periodic Condition
•
Port
•
Scattering Boundary Condition
•
Surface Current Density
•
Surface Magnetic Current Density
•
Surface Roughness
•
Symmetry Plane
•
Three-Port Network
•
Transition Boundary Condition
•
Two-Port Network
Edge, Point, and Pair
•
Circular Port Reference Axis
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Edge Current
•
Electric Field
•
Electric Point Dipole
•
Electric Potential
•
Ground
•
Integration Line for Current
•
Integration Line for Voltage
•
Line Current (Out-of-Plane)
•
Magnetic Current
•
Magnetic Field
•
Magnetic Point Dipole
•
Perfect Electric Conductor
•
Perfect Magnetic Conductor
•
Periodic Port Reference Point
•
Reference Point
•
Surface Current Density
•
Surface Magnetic Current Density
•
Symmetry Axis Reference Point
For 2D 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 to common feature nodes. You can also search for information: press F1 to open the Help window or Ctrl+F1 to open the Documentation window.