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Missed a file in the NASA9 commit of yesterday

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Harry Moffat 2007-09-14 14:19:52 +00:00
parent 7c89caa61f
commit e961587418
1 changed files with 40 additions and 0 deletions
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40
Cantera/python/ctml_writer.py
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@ -605,6 +605,46 @@ class NASA(thermo):
u["size"] = "7"
u["name"] = "coeffs"
class NASA9(thermo):
"""NASA9 polynomial parameterization for a single temperature region."""
def __init__(self, range = (0.0, 0.0),
coeffs = [], p0 = -1.0):
self._t = range # Range of the polynomial representation
self._pref = p0 # Reference pressure
if len(coeffs) <> 9:
raise CTI_Error('NASA9 coefficient list must have length = 9')
self._coeffs = coeffs
def export(self, f, fmt='CSV'):
if fmt == 'CSV':
str = 'NASA9,'+`self._t[0]`+','+`self._t[1]`+','
for i in range(9):
str += '%17.9E, ' % self._coeffs[i]
f.write(str)
def build(self, t):
n = t.addChild("NASA9")
n['Tmin'] = `self._t[0]`
n['Tmax'] = `self._t[1]`
if self._pref <= 0.0:
n['P0'] = `_pref`
else:
n['P0'] = `self._pref`
str = ''
for i in range(4):
str += '%17.9E, ' % self._coeffs[i]
str += '\n'
str += '%17.9E, %17.9E, %17.9E, %17.9E' % (self._coeffs[4], self._coeffs[5],
self._coeffs[6], self._coeffs[7])
str += '\n'
str += '%17.9E' % (self._coeffs[8])
u = n.addChild("floatArray", str)
u["size"] = "9"
u["name"] = "coeffs"
class Shomate(thermo):
"""Shomate polynomial parameterization."""