Notation

= number of collectors
= maldistribution factor
= diameter of particles, m
= Reynolds number
= dynamic liquid holdup, m3/m3reactor volume
= dynamic liquid holdup at the transition point, m3/m3 reactor volume
= gas mass flow rate, kg·m-2·s-1
= liquid mass flow rate, kg·m-2·s-1
= solid flow rate, mm/s
= superficial gas velocity, m/s
= coefficient defined in eqn (2)
= coefficient defined in eqn (6)
= coefficient defined in eqn (6)
= coefficient defined in eqn (6)