TABLE I.

Nomenclature.

Symbol	Definition	Units	Value
$J_{w,c}$	Water flux across cell membrane	m/s	Variable
$J_{g,c}$	Glycerol flux across cell membrane	mol m−2 s−1	Variable
$J_v$	Solution flux across AN69 membrane	m/s	Variable
$J_g$	Glycerol flux across AN69 membrane	mol m−2 s−1	Variable
$J_s$	Sodium chloride flux across AN69 membrane	mol m−2 s−1	Variable
C	Concentration	mol/m3	Variable
Q	Flow rate	m3/s	Variable
P	Pressure	Pa	Variable
g	Glycerol, subscript	…	…
s	Sodium chloride, subscript	…	…
c	Cell stream, subscript	…	…
1	Extracellular stream, subscript	…	…
2	Wash stream, subscript	…	…
$M_{s,c}$	Osmolarity of intracellular salts	osmol/m3	Variable
${\dot{n}}_c$	Cell flow rate	cells/s	Variable
ns,c	Osmoles salts per cell	osmol/cell	2.0 × 10−14
Vb	Osmotically inactive cell volume	m3	2.7 × 10−17
Ac	Cell surface area	m2	1.3 × 10−10
Lp,c	Hydraulic permeability of cell membrane	m Pa−1 s−1	1.5 × 10−12
Pg,c	Glycerol permeability of cell membrane	m/s	3.0 × 10−8
Lp	Hydraulic permeability of AN69 membrane	m Pa−1 s−1	Variable
Pg	Glycerol permeability of AN69 membrane	m/s	Variable
Ps	Sodium chloride permeability of AN69 membrane	m/s	6.5 × 10−6
σg	Glycerol reflection coefficient	…	0.009
μ	Viscosity	Pa·s	Variable
W	Channel width	m	350 × 10−6
H	Channel height	m	(50 or 130) × 10−6
R	Gas constant	J mol−1 K−1	8.314
T	Temperature	K	295
vg	Molar volume of glycerol	m3/mol	7.1 × 10−5