simpeg.electromagnetics.frequency_domain.Simulation3DCurrentDensity.getA#
- Simulation3DCurrentDensity.getA(freq)[source]#
System matrix for the frequency provided.
This method returns the system matrix for the frequency provided. The system matrix at each frequency is given by:
\[\mathbf{A} = \mathbf{C M_{e\mu}^{-1} C^T M_{f\rho}} + i\omega \mathbf{I}\]where
\(\mathbf{M_{f\rho}}\) is the inner-product matrix for resistivities projected to faces
\(\mathbf{M_{e\mu}}\) is the inner-product matrix for permeabilities projected to edges
See the Notes section of the doc strings for
Simulation3DCurrentDensity
for a full description of the formulation.- Parameters:
- freq
float
The frequency in Hz.
- freq
- Returns:
- (
n_faces
,n_faces
)sp.sparse.csr_matrix
The system matrix.
- (