Air distribution characteristics of circular column attached ventilation under different column layout modes

For various circular column layout modes in large space buildings, studies the air distribution characteristics of single, double and four column attached ventilation. Selecting fourteen kinds of column layout models, studies the flow field and air distribution characteristics of circular column attached ventilation by means of flow field visualization experiment and numerical simulation. Evaluates the ventilation performance of the four single column layout modes with velocity field, temperature field, temperature difference between head and foot, draft sensation index and ventilation efficiency. The results show that the single, double and four column attached ventilation can form the air distribution of air lake in the occupied zone, which is similar to the displacement ventilation. Double column and four column attached ventilation can be simplified into single column one for research.