Airflow distribution is the technique of controlling and arranging the air flow in the air-conditioning area. The quality of it takes an important part in the air-conditioning effect. The parameters of supply air have a direct effect on the airflow distribution. Taking one of office as model room, the relevant mathematical and physical models are established, and indoor airflow of the model room at different air supply parameters is simulated with CFD software: Airpak. The field of air temperature and velocity are offered. The relation between air supply parameter and the field of air temperature and velocity is achieved. Finally, we valuate the airflow distribution with energy index η and get a best air supply parameter. It provides some causes for the design and practice.
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