**Note**: Bold typeface indicates vector

A_{p} Particle projected area [E6.7]

b Buoyancy factor [E6.5]

B_{m} Mass transfer number

C_{D} Drag coefficient [E6.8]

C_{p} Specific heat capacity

D_{p} Drag function [E6.6]

F Frössling correction for mass transfer

F_{s} Particle solid fraction

**g** Gravitational acceleration (vector)

H_{fg} Latent heat of vaporisation

K Turbulence kinetic energy

k Thermal conductivity

L Latent heat of solidification

m_{p} Mass of a particle

Nu Nusselt number

Re Particle Reynolds number (Re = )

T Temperature

T_{L} Liquidus temperature

T_{s} Solidus temperature

W Molecular weight

m Solidification index

D_{te} Eddy lifetime [E6.10]

D_{tr} Eddy crossing-time [E6.12]

D_{te} Lagrangian time-step

a Particle heat transfer coefficient

**U** Instantaneous continuous-phase velocity

**U**'_{c} Fluctuating continuous-phase velocity (Section
6.6.1)

**U**_{c} Continuous-phase velocity

**U**_{p} Particle velocity

**x**_{p} Particle position

Y_{vs} Mass fraction of vapour at droplet surface

Y_{voo} Mass fraction of vapour in surroundings

e Rate of dissipation of turbulence kinetic energy

f_{c} Continuous-phase property

W Angular speed of rotation of the co-ordinate system [E6.13]

n_{c} Continuous-phase
kinematic viscosity

r Density

Subscripts

p particle

v vapour

s particle solid phase

l particle liquid phase

c continuous phase