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For electrostatics and magnetostatics modeling, the boundary element method is available as an alternative method of modeling large or infinite regions.

This makes it possible to represent an infinite region with a finite-sized model and avoids artificial truncation effects from the model boundaries. When an infinite element layer is added to the outside of a finite-sized modeling domain, the field equations are automatically scaled. For modeling unbounded or large modeling domains, infinite elements are available for both electric and magnetic fields. In addition, a range of advanced boundary conditions are included, such as terminal conditions for connection with SPICE circuits, floating potentials, conditions for symmetry and periodicity, surface impedance, surface currents, distributed resistance, capacitance, impedance, and contact resistance. Visit for a searchable list of all COMSOL offices and local. All COMSOL manuals use a set of consistent typographical conventions that should. Boundary Conditions and Infinite Elements The AC/DC Module grants you access to a set of essential boundary conditions such as electric and magnetic potential, electric and magnetic insulation, zero charge, and field and current values as well.ĪC/DC Module User’s Guide and the AC/DC Module Model Library, and this.

Both electric and magnetic media can include nonlinearities, such as B- H curves, or even be described by implicitly given equations. Material properties are allowed to be spatially varying, time-dependent, anisotropic, and have losses. Materials and constitutive relations are defined in terms of permittivity, permeability, conductivity, and remanent fields. Typical applications include capacitors, inductors, insulators, coils, motors, actuators, and sensors, with dedicated tools for extracting parameters such as resistance, capacitance, inductance, impedance, force, and torque.

Modeling Capacitors, Inductors, Insulators, Coils, Motors, and Sensors The AC/DC Module is used for simulating electric, magnetic, and electromagnetic fields in static and low-frequency applications.

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