objective_saturation_pressure

despasito.thermodynamics.calc.objective_saturation_pressure

objective_saturation_pressure(shift, Pv, vlist)

Objective function used to calculate the saturation pressure.

Parameters:

• shift (float) – [Pa] Guess in Psat value used to translate the pressure vs. specific volume curve

• Pv (numpy.ndarray) – [Pa] Pressure associated with specific volume of system with given temperature and composition

• vlist (numpy.ndarray) – [mol/\(m^3\)] Specific volume array. Length depends on values in density_opts passed to pressure_vs_volume_arrays()

Returns:

obj_value – Output of objective function, the addition of the positive area between first two roots, and negative area between second and third roots, quantity squared.

Return type:

float