def __add__(self, other):
if isinstance(other, ConvectionTerm):
if other.__class__ != self.__class__:
raise TypeError, "ConvectionTerms must use the same scheme: %s != %s" % (self.__class__.__name__, other.__class__.__name__)
return self.__class__(coeff=self.coeff + other.coeff)
else:
return FaceTerm.__add__(self, other)
