5. Depletion Results File Format¶
The current version of the depletion results file format is 1.1.
/
- Attributes
filetype (char[]) – String indicating the type of file.
version (int[2]) – Major and minor version of the statepoint file format.
- Datasets
eigenvalues (double[][][2]) – k-eigenvalues at each time/stage. This array has shape (number of timesteps, number of stages, value). The last axis contains the eigenvalue and the associated uncertainty
number (double[][][][]) – Total number of atoms. This array has shape (number of timesteps, number of stages, number of materials, number of nuclides).
reaction rates (double[][][][][]) – Reaction rates used to build depletion matrices. This array has shape (number of timesteps, number of stages, number of materials, number of nuclides, number of reactions).
time (double[][2]) – Time in [s] at beginning/end of each step.
source_rate (double[][]) – Power in [W] or source rate in [neutron/sec]. This array has shape (number of timesteps, number of stages).
depletion time (double[]) – Average process time in [s] spent depleting a material across all burnable materials and, if applicable, MPI processes.
/materials/<id>/
- Attributes
index (int) – Index used in results for this material
volume (double) – Volume of this material in [cm^3]
/nuclides/<name>/
- Attributes
atom number index (int) – Index in array of total atoms for this nuclide
reaction rate index (int) – Index in array of reaction rates for this nuclide
/reactions/<name>/
- Attributes
index (int) – Index user in results for this reaction
Note
The reaction rates for some isotopes not originally present may
be non-zero, but should be negligible compared to other atoms.
This can be controlled by changing the
openmc.deplete.Operator dilute_initial attribute.