simpeg.electromagnetics.time_domain.sources.LineCurrent

class simpeg.electromagnetics.time_domain.sources.LineCurrent(receiver_list=None, location=None, current=1.0, mu=1.25663706212e-06, srcType=None, **kwargs)

Bases: BaseTDEMSrc

Line current source.

Given the wire path provided by the (n_loc, 3) locations array, the cells intersected by the wire path are identified and integrated source terms are computed.

Parameters:

receiver_listlist of simpeg.electromagnetics.time_domain.receivers.BaseRx

List of TDEM receivers

location(n, 3) numpy.ndarray

Array defining the node locations for the wire path. For inductive sources, you must close the loop, (i.e. provide the same point as the first and last entry of the array).

currentfloat, optional

A non-zero current value.

mufloat, optional

Magnetic permeability to use.

Attributes

current	Source current
integrate	Integrated source term
location	Line current nodes locations
nD	Number of data associated with the source.
n_segments	The number of line current segments.
receiver_list	List of receivers associated with the source
srcType	Implement at inductive or galvanic source
uid	Universal unique identifier
vnD	Vector number of data.
waveform	Current waveform for the source

Methods

Mejs(simulation)	Integrated electrical source term on edges
Mfjs(simulation)	Integrated electrical source term on faces
bInitial(simulation)	Compute initial magnetic flux density.
bInitialDeriv(simulation, v[, adjoint, f])	Compute derivative of intitial magnetic flux density times a vector
eInitial(simulation)	Compute initial electric field
eInitialDeriv(simulation[, v, adjoint, f])	Compute derivative of initial electric field times a vector
eval(simulation, time)	Return magnetic and electric source terms at a given time
evalDeriv(simulation, time[, v, adjoint])	Derivative of magnetic and electric source terms time a vector at a given time
getRHSdc(simulation)	Right-hand side for galvanic source term
get_receiver_indices(receivers)	Get indices for a subset of receivers within the source's receivers list.
hInitial(simulation)	Compute initial magnetic field.
hInitialDeriv(simulation, v[, adjoint, f])	Compute derivative of intitial magnetic field times a vector
jInitial(simulation)	Compute initial current density
jInitialDeriv(simulation[, v, adjoint, f])	Compute derivative of initial current density times a vector
phiInitial(simulation)	Initial scalar potential
s_e(simulation, time)	Electric source term (s_e) at the time provided
s_eDeriv(simulation, time[, v, adjoint])	Returns Zero for BaseTDEMSrc
s_m(simulation, time)	Returns Zero for LineCurrent
s_mDeriv(simulation, time[, v, adjoint])	Returns Zero for BaseTDEMSrc

Galleries and Tutorials using simpeg.electromagnetics.time_domain.sources.LineCurrent

Time-domain CSEM for a resistive cube in a deep marine setting

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