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ElectromagneticSourceAssignment Properties

Electromagnetic source assignments

Since R2021a

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Domain-specific electromagnetic workflow is not recommended. New features might not be compatible with this workflow. For help migrating your existing code to the unified finite element workflow, see Migration from Domain-Specific to Unified Workflow.

An ElectromagneticSourceAssignment object describes the source of an electromagnetic model. An ElectromagneticModel object contains a vector of ElectromagneticSourceAssignment objects in its Sources.SourceAssignments property.

Create electromagnetic source assignments for your model using the electromagneticSource function.

Properties

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Geometric region type, specified as "Face" for a 2-D model or "Cell" for a 3-D model.

Data Types: char | string

Region ID, specified as a vector of positive integers. Find the face or cell IDs by using pdegplot with the FaceLabels or CellLabels name-value argument set to "on".

Data Types: double

Charge density, specified as a real number or a function handle. Use a function handle to specify a charge density that depends on the coordinates.

Data Types: double | function_handle

Current density, specified as a real number, a column vector, a function handle, or a ConductionResults object. Use a function handle to specify a current density that depends on the coordinates.

For magnetostatic analysis, the current density must be a real number for a 2-D model, a column vector of three elements for a 3-D model, a function handle for a 2-D or 3-D model, or a ConductionResults object for a 3-D model.

For harmonic analysis with the electric field type, the current density must be a column vector of two elements for a 2-D model, a column vector of three elements for a 3-D model, or a function handle for a 2-D or 3-D model. The toolbox multiplies the specified current density value by -i and by frequency.

For harmonic analysis with the magnetic field type, the current density must be a scalar for a 2-D model, a column vector of three elements for a 3-D model, or a function handle for a 2-D or 3-D model. The toolbox uses the curl of the specified current density.

Data Types: double | function_handle

Magnetization, specified as a column vector of two elements for a 2-D model, a column vector of three elements for a 3-D model, or a function handle. Use a function handle to specify a magnetization that depends on the coordinates.

Data Types: double | function_handle

Version History

Introduced in R2021a

See Also

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