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Merge pull request #1882 from ojschumann/stats_branch

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Implementation of openmc.stats.Mixture distribution
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Paul Romano 2021-10-01 11:24:29 -05:00 • committed by GitHub
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docs/source/io_formats/settings.rst
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@ -619,16 +619,17 @@ variable and whose sub-elements/attributes are as follows:
:type:
The type of the distribution. Valid options are "uniform", "discrete",
"tabular", "maxwell", and "watt". The "uniform" option produces variates
sampled from a uniform distribution over a finite interval. The "discrete"
option produces random variates that can assume a finite number of values
(i.e., a distribution characterized by a probability mass function). The
"tabular" option produces random variates sampled from a tabulated
"tabular", "maxwell", "watt", and "mixture". The "uniform" option produces
variates sampled from a uniform distribution over a finite interval. The
"discrete" option produces random variates that can assume a finite number
of values (i.e., a distribution characterized by a probability mass function).
The "tabular" option produces random variates sampled from a tabulated
distribution where the density function is either a histogram or
linearly-interpolated between tabulated points. The "watt" option produces
random variates is sampled from a Watt fission spectrum (only used for
energies). The "maxwell" option produce variates sampled from a Maxwell
fission spectrum (only used for energies).
fission spectrum (only used for energies). The "mixture" option produces samples
from univariate sub-distributions with given probabilities.
*Default*: None
@ -651,12 +652,22 @@ variable and whose sub-elements/attributes are as follows:
.. note:: The above format should be used even when using the multi-group
:ref:`energy_mode`.
:interpolation:
For a "tabular" distribution, ``interpolation`` can be set to "histogram" or
"linear-linear" thereby specifying how tabular points are to be interpolated.
*Default*: histogram
:pair:
For a "mixture" distribution, this element provides a distribution and its corresponding probability.
:probability:
An attribute or ``pair`` that provides the probability of a univariate distribution within a "mixture" distribution.
:dist:
This sub-element of a ``pair`` element provides information on the corresponding univariate distribution.
-------------------------
``<state_point>`` Element
-------------------------