Dt. Hughes et Tr. Bott, MINIMUM THICKNESS OF A LIQUID-FILM FLOWING DOWN A VERTICAL TUBE, International journal of heat and mass transfer, 41(2), 1998, pp. 253-260
In processing equipment in which falling films are employed, the break
up of the him may be a limitation on the effective use of the surface
for transfer operations; A model has been developed which enables the
geometry of fluids travelling down the inside or outside of vertical
tubes to be calculated. Once the geometry of the film or rivulet flow
has been found, the associated heat or mass transfer conditions can be
calculated. Flow geometries can be calculated for any flowrate and it
is expected that this theory will be of Value in the optimisation of
falling film equipment. (C) 1997 Elsevier Science Ltd.