def __init__(self):
self.significantDigits = 7
self.name = None # Name of the current fluid
self.description = None # Description of the current fluid
self.reference = None # Reference data for the current fluid
self.Tmax = None # Maximum temperature in K
self.Tmin = None # Minimum temperature in K
self.xmax = 1.0 # Maximum concentration
self.xmin = 0.0 # Minimum concentration
self.xid = self.ifrac_undefined # Concentration is mole, mass or volume-based
self.TminPsat = None # Minimum saturation temperature in K
self.Tbase = None # Base value for temperature fits
self.xbase = None # Base value for concentration fits
self.temperature = IncompressibleData() # Temperature for data points in K
self.concentration = IncompressibleData() # Concentration data points in weight fraction
self.density = IncompressibleData() # Density in kg/m3
self.specific_heat = IncompressibleData() # Heat capacity in J/(kg.K)
self.viscosity = IncompressibleData() # Dynamic viscosity in Pa.s
self.conductivity = IncompressibleData() # Thermal conductivity in W/(m.K)
self.saturation_pressure = IncompressibleData() # Saturation pressure in Pa
self.T_freeze = IncompressibleData() # Freezing temperature in K
self.mass2input = IncompressibleData() # dd
self.volume2input = IncompressibleData() # dd
self.mole2input = IncompressibleData() # dd
## Some of the functions might need a guess array
#self.viscosity.type = self.viscosity.INCOMPRESSIBLE_EXPONENTIAL
#self.viscosity.coeffs = np.array([+7e+2, -6e+1, +1e+1])
#self.saturation_pressure.type = self.saturation_pressure.INCOMPRESSIBLE_EXPONENTIAL
#self.saturation_pressure.coeffs = np.array([-5e+3, +3e+1, -1e+1])
self.xref = 0.0
self.Tref = 0.0
self.pref = 0.0
self.href = 0.0
self.sref = 0.0
self.uref = 0.0
self.rhoref = 0.0
