Where " a 0 " is the average intermolecular distance of the molecule that is freezing within the liquid, " d " is the overall thickness of the liquid film, " ? " is the solution viscosity, " R " is the particle radius and " z " is an exponent that can vary from 1 to 5.
22.
A number of different terms are used to denote the CHF condition : departure from nucleate boiling ( DNB ), liquid film dryout ( LFD ), annular film dryout ( AFD ), dryout ( DO ), burnout ( BO ), boiling crisis ( BC ), boiling transition ( BT ), etc . DNB, LFD and AFD represent specific mechanisms which will be introduced later.
