Cumulant LBM Minor Fixes

lbmpy/creationfunctions.py

@@ -201,7 +201,7 @@ from lbmpy.fluctuatinglb import add_fluctuations_to_collision_rule
 from lbmpy.methods import (create_mrt_orthogonal, create_mrt_raw, create_srt, create_trt, create_trt_kbc)
 from lbmpy.methods.abstractlbmethod import RelaxationInfo
 from lbmpy.methods.centeredcumulant import CenteredCumulantBasedLbMethod
-from lbmpy.methods.momentbased.moment_transforms import FastCentralMomentTransform
+from lbmpy.methods.momentbased.moment_transforms import PdfsToCentralMomentsByShiftMatrix
 from lbmpy.methods.centeredcumulant.cumulant_transform import CentralMomentsToCumulantsByGeneratingFunc
 from lbmpy.methods.creationfunctions import (
     create_with_monomial_cumulants, create_with_polynomial_cumulants, create_with_default_polynomial_cumulants)
@@ -579,7 +579,7 @@ def update_with_default_parameters(params, opt_params=None, fail_on_unknown_para
         'initial_velocity': None,
 
         'galilean_correction': False,  # only available for D3Q27 cumulant methods
-        'central_moment_transform_class': FastCentralMomentTransform,
+        'central_moment_transform_class': PdfsToCentralMomentsByShiftMatrix,
         'cumulant_transform_class': CentralMomentsToCumulantsByGeneratingFunc,
 
         'entropic': False,

lbmpy/methods/centeredcumulant/centeredcumulantmethod.py

@@ -27,7 +27,7 @@ from lbmpy.methods.centeredcumulant.cumulant_transform import (
 
 from lbmpy.methods.momentbased.moment_transforms import (
     PRE_COLLISION_CENTRAL_MOMENT, POST_COLLISION_CENTRAL_MOMENT,
-    FastCentralMomentTransform)
+    PdfsToCentralMomentsByShiftMatrix)
 
 from lbmpy.methods.centeredcumulant.force_model import CenteredCumulantForceModel
 from lbmpy.methods.centeredcumulant.galilean_correction import (
@@ -139,7 +139,7 @@ class CenteredCumulantBasedLbMethod(AbstractLbMethod):
 
     def __init__(self, stencil, cumulant_to_relaxation_info_dict, conserved_quantity_computation, force_model=None,
                  galilean_correction=False,
-                 central_moment_transform_class=FastCentralMomentTransform,
+                 central_moment_transform_class=PdfsToCentralMomentsByShiftMatrix,
                  cumulant_transform_class=CentralMomentsToCumulantsByGeneratingFunc):
         assert isinstance(conserved_quantity_computation,
                           AbstractConservedQuantityComputation)