def METHOD_NAME(self):
    self.net['throat.diffusive_size_factors'] = self.size_factors
    mod = op.models.physics.diffusive_conductance.mixed_diffusion
    self.phase.add_model(propname='throat.diffusive_conductance', model=mod)
    self.phase.regenerate_models()
    actual = self.phase['throat.diffusive_conductance'].mean()
    assert_allclose(actual, desired=0.117568, rtol=1e-5)
    del self.net["throat.diffusive_size_factors"]