Two-Phase Flow Analyses In Rotory Dryer With Agitator

摘要

The rotary dryer with agitator is an apparatus that combines convection drying as hot air and rotary drying with agitator. One of the important design factors to decide the drying efficiency is inside flow characteristics of the chamber. It depends on shape, material, rotational velocity of impeller and velocity of hot air. In this study, we calculated flow fields in dryer chamber with various conditions by a commercial CFD code, ANSYS CFX. Because inside flow of dryer chamber is consisted of hot air and vapor, we performed two-phase numerical analyses: Especially, we obtained the volume fraction distribution inside chamber under unsteady and turbulence flow conditions.