SimPEG.electromagnetics.time_domain.sources.RawVec_Grounded.phiInitial

RawVec_Grounded.phiInitial(simulation)

Initial scalar potential

Returns the scalar potential at the initial time is static fields are present.

Parameters:

simulationSimPEG.electromagnetics.base.BaseEMSimulation

An electromagnetic simulation

Returns:

Zero or numpy.ndarray

Returns Zero if there are no initial fields. Returns a numpy.ndarray if there are initial fields.