a	Helmholtz energy/J mol−1
$c$	Concentration/g g−1
$c^{*}$	Saturation concentration/g g−1
Ca	Capillary number/-
cp	Heat capacity/J mol−1
d h	Hydraulic diameter/mm
d i	Inner diameter/mm
d out	Outer diameter/mm
Eö	Eötvös number/-
h	Enthalpy/J mol−1
k	Interaction parameter/-
k B	Boltzmann constant/J K−1
L 50	Median slug length
L 90-10	Width of slug length
L tubing	Length of tubing/m
M	Molar mass/g mol−1
m seg	Segment number/-
N	Number of sites/-
Q air	Gas volume flow rate/mL min−1
Q liq	Liquid volume flow rate/mL min−1
Q tot	Total volume flow rate/mL min−1
R	Universal gas constant/J mol−1 K−1
T	Temperature/K
u	Flow velocity/m s−1
u	Dispersion energy/J mol−1
w	Mass fraction/wt.-%
x	Mole fraction/mol mol−1