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Sources can take mu values other than mu_0

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Lindsey
2015-06-23 18:25:29 -07:00
parent 5732e85a2f
commit 36f8eca25c
1 changed files with 6 additions and 6 deletions
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simpegEM/Utils/SrcUtils.py
+6 -6
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@@ -2,7 +2,7 @@ from SimPEG import *
from scipy.special import ellipk, ellipe
from scipy.constants import mu_0, pi
def MagneticDipoleVectorPotential(srcLoc, obsLoc, component, dipoleMoment=(0., 0., 1.)):
def MagneticDipoleVectorPotential(srcLoc, obsLoc, component, dipoleMoment=(0., 0., 1.), mu = mu_0):
"""
Calculate the vector potential of a set of magnetic dipoles
at given locations 'ref. <http://en.wikipedia.org/wiki/Dipole#Magnetic_vector_potential>'
@@ -48,13 +48,13 @@ def MagneticDipoleVectorPotential(srcLoc, obsLoc, component, dipoleMoment=(0., 0
dR = obsLoc - srcLoc[i, np.newaxis].repeat(nEdges, axis=0)
mCr = np.cross(m, dR)
r = np.sqrt((dR**2).sum(axis=1))
A[:, i] = +(mu_0/(4*pi)) * mCr[:,dimInd]/(r**3)
A[:, i] = +(mu/(4*pi)) * mCr[:,dimInd]/(r**3)
if nSrc == 1:
return A.flatten()
return A
def MagneticDipoleFields(srcLoc, obsLoc, component, dipoleMoment=1.):
def MagneticDipoleFields(srcLoc, obsLoc, component, dipoleMoment=1., mu = mu_0):
"""
Calculate the vector potential of a set of magnetic dipoles
at given locations 'ref. <http://en.wikipedia.org/wiki/Dipole#Magnetic_vector_potential>'
@@ -89,11 +89,11 @@ def MagneticDipoleFields(srcLoc, obsLoc, component, dipoleMoment=1.):
dR = obsLoc - srcLoc[i, np.newaxis].repeat(nFaces, axis=0)
r = np.sqrt((dR**2).sum(axis=1))
if dimInd == 0:
B[:, i] = +(mu_0/(4*pi)) /(r**3) * (3*dR[:,2]*dR[:,0]/r**2)
B[:, i] = +(mu/(4*pi)) /(r**3) * (3*dR[:,2]*dR[:,0]/r**2)
elif dimInd == 1:
B[:, i] = +(mu_0/(4*pi)) /(r**3) * (3*dR[:,2]*dR[:,1]/r**2)
B[:, i] = +(mu/(4*pi)) /(r**3) * (3*dR[:,2]*dR[:,1]/r**2)
elif dimInd == 2:
B[:, i] = +(mu_0/(4*pi)) /(r**3) * (3*dR[:,2]**2/r**2-1)
B[:, i] = +(mu/(4*pi)) /(r**3) * (3*dR[:,2]**2/r**2-1)
else:
raise Exception("Not Implemented")
if nSrc == 1: