Symbol	Unit	Description
$C$	[m]	Impeller off‐bottom clearance
$\mathrm{\Delta }C$	[m]	Impeller mutual clearance
$C_{LES}$	$-$	Smagorinsky constant (LES)
$C_s$	[mol/kg]	Substrate concentration
$C_x$	[g/kg]	Biomass concentration (Eulerian)
$Co$	$-$	Courant number
$d_s$	[m]	Shaft diameter
$D$	[m]	Impeller diameter
$\mathcal{D}$	[m2/s]	Diffusion coefficient (glucose in water)
$F_s$	[mol/s]	Substrate feed rate (general)
$H_l$	[m]	Liquid filled height
$k_t$	[m2/s2]	Turbulent kinetic energy
$K_s$	[mol/kg]	Substrate affinity constant
$N_p$	$-$	Total number of parcels
$N$	[RPM]	Agitation rate
$NX$	$-$	Grid divisions, x‐direction
$P{o}_{\tau }$	$-$	Power number, torque
$P{o}_{\epsilon }$	$-$	Power number, dissipation
$q_s$	[mols/gdw/s]	Specific uptake rate, substrate
$q_{s,max}$	[mols/gdw/s]	Maximum specific uptake rate, substrate
$r$	[m]	Radial coordinate
$r_{tip}$	[m]	Impeller radius
$R$	[m]	Tank radius
$t$	[s]	Time (general)
$\mathrm{\Delta }t$	[s]	Timestep size (general)
$\mathrm{\Delta }{t}_p$	[s]	Timestep size, parcel tracking
$\mathrm{\Delta }{t}_{write}$	[s]	Timestep size, parcel data writing
$T$	[m]	Tank diameter
$u^{\prime }$	[m/s]	Fluctuating velocity
$U_{rad}$	[m/s]	Radial velocity
$v_{tip}$	[m/s]	Impeller tip speed
$V$	[m3]	Volume
$\mathrm{\Delta }x$	[m]	Grid spacing
$X_{pool}$	$\frac{\mu \mathrm{mol}}{{\mathrm{g}}_{\mathrm{dw}}}$ (metabolite) ‐ (enzyme)	Intracellular pool size
$y$	[m]	Axial coordinate