Equilibrium constants

solve_rachford_rice(K, z, [V]; <keyword arguments>)

Compute vapor mole fraction V for given equilibrium constants K and mole fractions z.

Arguments

K - Equal length to z, containing the equilibrium constants for each component. z - Mole fractions. Should sum up to unity.

Keyword arguments

tol = 1e-12 - Tolerance for solve. maxiter - Maximum number of iterations ad - Use automatic differentiation (ForwardDiff) instead of analytical gradient.

Examples

julia> solve_rachford_rice([0.5, 1.5], [0.3, 0.7])
0.8000000000000002

initial_guess_K(eos, cond)

In-place version of initial_guess_K.

initial_guess_K(eos, cond)

Produce a plausible initial guess for K values for eos under current cond.

wilson_estimate!(K, properties, p, T)

Update a vector K in-place with K-values from wilson_estimate.

wilson_estimate(properties, p, T)

Create vector of K-values that holds the wilson_estimate for each species.

wilson_estimate(p, T, ω, p_c, T_c)

Estimate K-values for a given acentric factor ω and pressure and temperature at current and critical conditions.

Reference Vapor-Liquid Equilibrium. XI. A New Expression for the Excess Free Energy of Mixing by GM Wilson