Mass transfer process during the NaClO3 crystal growth process

Particle image velocimetry (PIV) technology was used directly to measure th e convection pattern in sodium chlorate (NaClO3) crystal growth. The two-di mensional velocity distributions in the solution of NaClO3 have been obtain ed from experiments, and the velocity fields were compared with concentrati on fields that have been obtained by a phase-shift interferometer. The stru ctures of both results of the velocity fields and concentration fields agre e well. The coupling action of velocity and concentration was analyzed. (C) 2001 Elsevier Science Ltd. All rights reserved.