Uniform and rapid pre-drying of mandarin is important to improve the storage quality. The aim of this study was to
suggest the basic design of forced ventilated pre-drying facility for mandarin by thermal flow analysis using computational
fluid dynamics software (FLUENT 6.2). Developed CFD simulation model was verified by comparison with experimental
data. Airflows and temperature distributions in the five conceptional designs including existing ordinary temperature storage
rooms were analyzed and appropriate basic design was determined. Analysis of the effect of arrangement of windows and
exhaust fans on thermal flow in facility was carried out for more detailed design. The results of this investigation showed
that the predicted airflow velocity by CFD simulation showed a good agreement with the measured value and optimum
design condition for simulated forced ventilated pre-drying facility of mandarin has two exhaust fans and two windows on
both sidewalls and cover on loaded mandarin.