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cooling.py
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Tue, May 28, 20:22

cooling.py
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from numpy import *
from pNbody import *
try:
import cooling_with_metals as libcooling
except:
pass
'''
In pNbody we need to wrap cooling_with_metals in cooling
in order to initialize it safely with the default parameters.
This module is a wrapper around the defaut GEAR cooling function
using the metallicity.
'''
'''
THIS IS NOW DOWN OUTSIDE
as we cannot acess to nb.localsystem_of_units
print "!!!!!! in cooling.py !!!!"
print "!!!!!! this is bad !!!! we should never use UNITSPARAMETERFILE"
print "!!!!!! this is bad !!!! we should never use UNITSPARAMETERFILE"
unitsparameters = param.Params(UNITSPARAMETERFILE,None)
libcooling.init_cooling(unitsparameters.get_dic())
print unitsparameters.get_dic()
sys.exit()
# set system of units
params = {}
params['UnitLength_in_cm'] = unitsparameters.get('UnitLength_in_cm')
params['UnitVelocity_in_cm_per_s'] = unitsparameters.get('UnitVelocity_in_cm_per_s')
params['UnitMass_in_g'] = unitsparameters.get('UnitMass_in_g')
localsystem_of_units = units.Set_SystemUnits_From_Params(params)
'''
init_cooling = libcooling.init_cooling
get_lambda_from_Density_Temperature_FeH = libcooling.get_lambda_from_Density_Temperature_FeH
get_lambda_from_Density_EnergyInt_FeH = libcooling.get_lambda_from_Density_EnergyInt_FeH
get_lambda_from_Density_Entropy_FeH = libcooling.get_lambda_from_Density_Entropy_FeH
get_lambda_normalized_from_Temperature_FeH = libcooling.get_lambda_normalized_from_Temperature_FeH
get_cooling_time_from_Density_Temperature_FeH = libcooling.get_cooling_time_from_Density_Temperature_FeH
get_cooling_time_from_Density_EnergyInt_FeH = libcooling.get_cooling_time_from_Density_EnergyInt_FeH
def check():
print
libcooling.PrintParameters()
rho = 3.0364363e-06
u = 0.0015258887
fe = 0.
l = libcooling.get_lambda_from_Density_EnergyInt_FeH(rho,u,fe)
dudt = l/rho
dt = u/dudt
print
print "cooling time = ",dt

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