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Mag dipole sources, defined using prim-sec with a zero-frequency primary actually have a non-zer S_e component if there is variable mu. This has been corrected in the vector potential definition of the sources, and an issue created for the remaining sources. Testing has also been made more robust by using a rawVec source with both S_m and S_e defined which showed a couple bugs in some of the getRHSDeriv_m (which have been corrected), along with a couple minor sizing things in fields derivs

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This commit is contained in:
Lindsey
2015-06-23 18:32:00 -07:00
parent 36f8eca25c
commit ac3e7765fe
4 changed files with 71 additions and 33 deletions
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simpegEM/Tests/test_FDEM.py
+35 -11
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@@ -36,21 +36,42 @@ def getProblem(fdemType, comp):
XYZ = Utils.ndgrid(x,x,np.r_[0.])
Rx0 = EM.FDEM.RxFDEM(XYZ, comp)
Src0 = EM.FDEM.SrcFDEM_MagDipole([Rx0], freq=freq[0], loc=np.r_[0.,0.,0.])
Src1 = EM.FDEM.SrcFDEM_MagDipole([Rx0], freq=freq[1], loc=np.r_[0.,0.,0.])
survey = EM.FDEM.SurveyFDEM([Src0, Src1])
if verbose:
print ' Fetching %s problem' % (fdemType)
if fdemType == 'e':
S_m = np.zeros(mesh.nF)
S_e = np.zeros(mesh.nE)
S_m[Utils.closestPoints(mesh,[0.,0.,0.],'Fz') + np.sum(mesh.vnF[:1])] = 1.
S_e[Utils.closestPoints(mesh,[0.,0.,0.],'Ez') + np.sum(mesh.vnE[:1])] = 1.
Src1 = EM.FDEM.SrcFDEM_RawVec([Rx0], freq[0], S_m, S_e)
survey = EM.FDEM.SurveyFDEM([Src0,Src1])
prb = EM.FDEM.ProblemFDEM_e(mesh, mapping=mapping)
elif fdemType == 'b':
S_m = np.zeros(mesh.nF)
S_e = np.zeros(mesh.nE)
S_m[Utils.closestPoints(mesh,[0.,0.,0.],'Fz') + np.sum(mesh.vnF[:1])] = 1.
S_e[Utils.closestPoints(mesh,[0.,0.,0.],'Ez') + np.sum(mesh.vnE[:1])] = 1.
Src1 = EM.FDEM.SrcFDEM_RawVec([Rx0], freq[0], S_m, S_e)
survey = EM.FDEM.SurveyFDEM([Src0,Src1])
prb = EM.FDEM.ProblemFDEM_b(mesh, mapping=mapping)
elif fdemType == 'j':
S_m = np.zeros(mesh.nE)
S_e = np.zeros(mesh.nF)
S_m[Utils.closestPoints(mesh,[0.,0.,0.],'Ez') + np.sum(mesh.vnE[:1])] = 1.
S_e[Utils.closestPoints(mesh,[0.,0.,0.],'Fz') + np.sum(mesh.vnF[:1])] = 1.
Src1 = EM.FDEM.SrcFDEM_RawVec([Rx0], freq[0], S_m, S_e)
survey = EM.FDEM.SurveyFDEM([Src0,Src1])
prb = EM.FDEM.ProblemFDEM_j(mesh, mapping=mapping)
elif fdemType == 'h':
S_m = np.zeros(mesh.nE)
S_e = np.zeros(mesh.nF)
S_m[Utils.closestPoints(mesh,[0.,0.,0.],'Ez') + np.sum(mesh.vnE[:1])] = 1.
S_e[Utils.closestPoints(mesh,[0.,0.,0.],'Fz') + np.sum(mesh.vnF[:1])] = 1.
Src1 = EM.FDEM.SrcFDEM_RawVec([Rx0], freq[0], S_m, S_e)
survey = EM.FDEM.SurveyFDEM([Src0,Src1])
prb = EM.FDEM.ProblemFDEM_h(mesh, mapping=mapping)
else:
raise NotImplementedError()
@@ -69,15 +90,15 @@ def adjointTest(fdemType, comp):
print 'Adjoint %s formulation - %s' % (fdemType, comp)
m = np.log(np.ones(prb.mesh.nC)*CONDUCTIVITY)
mu = np.log(np.ones(prb.mesh.nC))*MU
mu = np.ones(prb.mesh.nC)*MU
if addrandoms is True:
m = m + np.random.randn(prb.mesh.nC)*CONDUCTIVITY*1e-1
m = m + np.random.randn(prb.mesh.nC)*np.log(CONDUCTIVITY)*1e-1
mu = mu + np.random.randn(prb.mesh.nC)*MU*1e-1
prb.mu = mu
survey = prb.survey
prb.PropMap.PropModel.mu = mu
prb.PropMap.PropModel.mui = 1./mu
u = prb.fields(m)
v = np.random.rand(survey.nD)
@@ -99,10 +120,12 @@ def derivTest(fdemType, comp):
mu = np.log(np.ones(prb.mesh.nC)*MU)
if addrandoms is True:
x0 = x0 + np.random.randn(prb.mesh.nC)*CONDUCTIVITY*1e-1
x0 = x0 + np.random.randn(prb.mesh.nC)*np.log(CONDUCTIVITY)*1e-1
mu = mu + np.random.randn(prb.mesh.nC)*MU*1e-1
prb.mu = mu
prb.PropMap.PropModel.mu = mu
prb.PropMap.PropModel.mui = 1./mu
survey = prb.survey
def fun(x):
return survey.dpred(x), lambda x: prb.Jvec(x0, x)
@@ -120,10 +143,11 @@ def crossCheckTest(fdemType, comp):
mu = np.log(np.ones(mesh.nC)*MU)
if addrandoms is True:
m = m + np.random.randn(mesh.nC)*CONDUCTIVITY*1e-1
m = m + np.random.randn(mesh.nC)*np.log(CONDUCTIVITY)*1e-1
mu = mu + np.random.randn(mesh.nC)*MU*1e-1
prb1.mu = mu
prb1.PropMap.PropModel.mu = mu
prb1.PropMap.PropModel.mui = 1./mu
survey1 = prb1.survey
d1 = survey1.dpred(m)