diff --git a/openpnm/models/physics/__init__.py b/openpnm/models/physics/__init__.py
index <HASH>..<HASH> 100644
--- a/openpnm/models/physics/__init__.py
+++ b/openpnm/models/physics/__init__.py
@@ -18,3 +18,5 @@ from . import thermal_conductance
 from . import hydraulic_conductance
 from . import multiphase
 from . import generic_source_term
+from . import flow_shape_factors
+from . import poisson_shape_factors
\ No newline at end of file
Modified physics models init file