Abstract
It is of practical importance to develop an inexpensive and reliable measurement method for mixing time in a cylindrical bath agitated by bottom gas injection. The thermocouple-based method was chosen in this water model study. Hot water was used as tracer and introduced from the surface of a water bath subjected to air injection from a single-hole bottom nozzle. The mixing time was determined on the basis of the history of the temperature of water in the bath. This method was found to be satisfactorily applicable to mixing time measurement in a bottom blown bath.
