pyopensn.post.CrossSectionSensitivityPostprocessor

class pyopensn.post.CrossSectionSensitivityPostprocessor

Cross-section sensitivity postprocessor.

ApplyKEigenvalueScaling(self: pyopensn.post.CrossSectionSensitivityPostprocessor, arg0: float) → None

Scale the previously computed sensitivities to k-eigenvalue sensitivities.

Parameters:

k_eff (float) – Forward k-eigenvalue used in the first-order k-sensitivity normalization.

Execute(self: pyopensn.post.CrossSectionSensitivityPostprocessor) → None

Execute the postprocessor.

GetValue(self: pyopensn.post.CrossSectionSensitivityPostprocessor) → numpy.ndarray[numpy.float64]

Returns the sensitivity values.

__init__(self: pyopensn.post.CrossSectionSensitivityPostprocessor, **kwargs) → None

Construct a cross-section sensitivity postprocessor.

sigma_t sensitivities use angular fluxes. Scattering and production sensitivities use flux moments.

Parameters:

  • problem (DiscreteOrdinatesProblem) – A handle to an existing discrete ordinates problem.

  • block_ids (List[int], optional) – Block restriction for the postprocessor. Empty/unspecified means no block restriction.

  • logical_volumes (List[LogicalVolume], optional) – Logical volumes to restrict the computation to.

  • sensitivity_type (str, optional) – Sensitivity type: ‘sigma_t’ (default), ‘scatter’, or ‘production’.

  • group (int, optional) – Group for sigma_t or production sensitivities.

  • moment (int, optional) – Scattering moment/order for scatter sensitivities. Aliased by ‘ell’; specify at most one of the two.

  • ell (int, optional) – Alias for ‘moment’. Specify at most one of ‘moment’ and ‘ell’.

  • from_group (int, optional) – Source group for the scatter coefficient.

  • to_group (int, optional) – Destination group for the scatter coefficient.

  • relative (bool, optional) – Return relative sensitivities x*dR/dx instead of dR/dx. Default False.

  • forward_flux_moments (str, optional) – Forward flux-moment file prefix. Empty (default) uses the current phi.

  • adjoint_flux_moments (str, optional) – Adjoint flux-moment file prefix. Empty (default) uses the current phi.

  • forward_angular_fluxes (str, optional) – Forward angular-flux file prefix. Empty (default) uses the current psi.

  • adjoint_angular_fluxes (str, optional) – Adjoint angular-flux file prefix. Empty (default) uses the current psi.

  • flux_moments_single_file (bool, optional) – Read flux moments from a single file instead of one file per rank. Default False.