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Convert ACE data from MeV to eV

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This commit is contained in:
Paul Romano 2016-10-24 18:44:51 -05:00
parent b50a9db628
commit 6da9f16d29
44 changed files with 219 additions and 212 deletions
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13
openmc/data/function.py
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@ -8,6 +8,7 @@ import numpy as np
import openmc.data
import openmc.checkvalue as cv
from openmc.mixin import EqualityMixin
from .data import EV_PER_MEV
INTERPOLATION_SCHEME = {1: 'histogram', 2: 'linear-linear', 3: 'linear-log',
4: 'log-linear', 5: 'log-log'}
@ -315,7 +316,7 @@ class Tabulated1D(Function1D):
return cls(x, y, breakpoints, interpolation)
@classmethod
def from_ace(cls, ace, idx=0):
def from_ace(cls, ace, idx=0, convert_units=True):
"""Create a Tabulated1D object from an ACE table.
Parameters
@ -324,6 +325,9 @@ class Tabulated1D(Function1D):
An ACE table
idx : int
Offset to read from in XSS array (default of zero)
convert_units : bool
If the abscissa represents energy, indicate whether to convert MeV
to eV.
Returns
-------
@ -348,8 +352,11 @@ class Tabulated1D(Function1D):
# Get (x,y) pairs
idx += 2*n_regions + 1
x = ace.xss[idx:idx + n_pairs]
y = ace.xss[idx + n_pairs:idx + 2*n_pairs]
x = ace.xss[idx:idx + n_pairs].copy()
y = ace.xss[idx + n_pairs:idx + 2*n_pairs].copy()
if convert_units:
x *= EV_PER_MEV
return Tabulated1D(x, y, breakpoints, interpolation)