SIMULATION STUDY OF COMPUTATIONAL FLUID DYNAMICS FOR CESIUM MOLECULAR DISTILLATION PROCESS

Numerical simulation study for liquid film turbulent flow field of the Wiped Film Molecular Distiller was carried out based on the FLUENT software platform with computation model RNG K-ε. The model was established by the twodimensional GAMBIT to simplify the computation, due to considerations on the complexity of Wiped Film Molecular Distiller. Some parameters such as the shape and size of the wiper, the rotate speed of the wiper blade and the feed-in speed of molecular distillation were optimized under constant temperature and pressure. It indicated that the turbulent film is steady and homogeneous when the parameters are as following: the shape of the wiper is column, and the size is 4mm diameter,the number of the wiper is 3, the rotate speed of the wiper blade is 180 round/min, and feed-in speed is 3. 5g/min.