pressure_vs_volume_spline

despasito.thermodynamics.calc.pressure_vs_volume_spline

pressure_vs_volume_spline(vlist, Plist)[source]

Fit arrays of specific volume and pressure values to a cubic Univariate Spline.

Parameters:

vlist (numpy.ndarray) – [\(m^3\)/mol] Specific volume array.
Plist (numpy.ndarray) – [Pa] Pressure associated with specific volume of system with given temperature and composition

Returns:

Pvspline (obj) – Function object of pressure vs. specific volume
roots (list) – List of specific volume roots. Subtract a system pressure from the output of Pvsrho to find density of vapor and/or liquid densities.
extrema (list) – List of specific volume values corresponding to local minima and maxima.