functional
- thermosteam.functional.normalize(array, minimum=1e-16)[source]
Return a normalized array to a magnitude of 1. If magnitude is zero, all fractions will have equal value.
- thermosteam.functional.mixing_simple(z, y)[source]
Return a weighted average of y given the weights, z.
Examples
>>> import numpy as np >>> mixing_simple(np.array([0.1, 0.9]), np.array([0.01, 0.02])) 0.019000000000000003
- thermosteam.functional.mixing_logarithmic(z, y)[source]
Return the logarithmic weighted average y given weights, z.
\[y = \sum_i z_i \cdot \log(y_i)\]Notes
Does not work on negative values.
Examples
>>> import numpy as np >>> mixing_logarithmic(np.array([0.1, 0.9]), np.array([0.01, 0.02])) 0.01866065983073615
- thermosteam.functional.mu_to_nu(mu, rho)[source]
Return the kinematic viscosity (nu) given the dynamic viscosity (mu) and density (rho).
\[\nu = \frac{\mu}{\rho}\]Examples
>>> mu_to_nu(0.000998, 998.) 1.0e-06
- thermosteam.functional.V_to_rho(V, MW)[source]
Return the density (rho) in kg/m^3 given the molar volume (V) in m^3/mol and molecular weight (MW) in g/mol.
\[\rho = \frac{MW}{1000\cdot V}\]- Parameters
V (float) – Molar volume, [m^3/mol]
MW (float) – Molecular weight, [g/mol]
- Returns
rho – Density, [kg/m^3]
- Return type
float
Examples
>>> V_to_rho(0.000132, 86.18) 652.878...
- thermosteam.functional.rho_to_V(rho, MW)[source]
Return the molar volume (V) in m^3/mol given the density (rho) in kg/m^3 and molecular weight (MW) in g/mol.
\[V = \left(\frac{1000 \rho}{MW}\right)^{-1}\]- Parameters
rho (float) – Density, [kg/m^3]
MW (float) – Molecular weight, [g/mol]
- Returns
V – Molar volume, [m^3/mol]
- Return type
float
Examples
>>> rho_to_V(652.9, 86.18) 0.0001319957...