Abstract
Airflow field in a storage house was simulated by isothermal k-ε type 2-equation turbulent model. The air was blown into the storage house from the duct on the ceiling, and out to the duct on the wall. The results showed complex airflow distribution which consisted of circulated flow from ceiling→side wall→floor to symmetry plane and flow to the inlet of the duct. The air distribution patterns differed with the length of inlet duct. The height of the inlet duct did not affect the airflow pattern significantly. However, the space where the velocity energy was less than 0.1m2/s2 was smallest when the inlet duct was at half the height of the storage house. Particles which mass was as same as the air were added into the flow field to investigate the removal of contaminants. Remains of particles were fewer in the case of shorter inlet duct, as well as the outlet duct closer to the floor.
