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Expose liquid water fraction in mixture #874

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Expose liquid water fraction in mixture #874

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c9cc443
Implement a simple draft API for the liquid water amount calculation
fwitte Dec 24, 2025
2dbfaac
Handle data retrieval if fluid is not a mixture
fwitte Dec 24, 2025
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18 changes: 18 additions & 0 deletions src/tespy/connections/connection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,8 @@
from tespy.tools.fluid_properties.functions import p_sat_T
from tespy.tools.fluid_properties.helpers import get_mixture_temperature_range
from tespy.tools.fluid_properties.helpers import single_fluid
from tespy.tools.fluid_properties.mixtures import _water_in_mixture
from tespy.tools.fluid_properties.mixtures import cond_check
from tespy.tools.fluid_properties.wrappers import wrapper_registry
from tespy.tools.global_vars import ERR
from tespy.tools.global_vars import fluid_property_data as fpd
Expand Down Expand Up @@ -1534,6 +1536,22 @@ def calc_phase(self):
except NotImplementedError:
return np.nan

def calc_liquid_water_in_mixture(self):
fluid = single_fluid(self.fluid_data)
if fluid is None:
water_alias = _water_in_mixture(self.fluid_data)
if water_alias:
water_alias = next(iter(water_alias))
mass_fractions_gas, molar_fraction_gas, mass_liquid, _, p_sat, pp_water = cond_check(
self.p.val_SI, self.calc_T(), self.fluid_data, water_alias
)
return mass_liquid
else:
return 0
else:
# not a mixture
return np.nan

def calc_results(self, units):
self.T.val_SI = self.calc_T()
fluid = single_fluid(self.fluid_data)
Expand Down