The dynamics of agitating single‐ and two‐phase liquid mixtures in the absence of an air‐liquid interface was compared with that of similar systems with an interface. Two geometrically similar cylindrical vessels, 12 and 18 in. in diameter respectively, were used, each fitted with a similar six‐bladed, disk‐turbine impeller. New general correlation curves of power number with Reynolds number are presented which show that elimination of the air‐liquid interface makes it possible to attain dynamic similarity in scale‐up in unbaffled vessels but makes little difference in baffled vessels.
No takes yet. Share an insight, caveat, or question.
Laity et al. (1957) studied this question.