lib.RK module

class lib.EoS.Cubic.RK.RK(T, P, mezcla, **kwargs)[source]

Bases: Cubic

Equation of state of Redlich-Kwong (1949), [1].

\[\begin{split}\begin{array}[t]{l} P = \frac{RT}{V-b}-\frac{a}{V\left(V+b\right)\sqrt{T}}\\ a = 0.42747\frac{R^2T_c^{2.5}}{P_c}\\ b = 0.08664\frac{RT_c}{P_c}\\ \end{array}\end{split}\]

Examples

Example 4.3 from [2], Propane saturated at 300K

>>> from lib.mezcla import Mezcla
>>> mix = Mezcla(5, ids=[4], caudalMolar=1, fraccionMolar=[1])
>>> eq = RK(300, 9.9742e5, mix)
>>> '%0.1f' % (eq.Vl.ccmol)
'101.4'
>>> eq = RK(300, 42.477e5, mix)
>>> '%0.1f' % (eq.Vg.ccmol)
'97.3'
_cubicDefinition(T)[source]

Definition of individual components coefficients

_lib(cmp, T)[source]
_GEOS(xi)[source]

Definition of parameters of generalized cubic equation of state, each child class must define in this procedure the values of mixture a, b, delta, epsilon. The returned values are not dimensionless.

Parameters:
xilist

Molar fraction of component in mixture, [-]

Returns:
parameterslist

Mixture parameters of equation, a, b, c, d

References