How Wind Speed and Wind Flow Direction May Influence Shading of the South and Southeast
 |
| I wish Dhaka City were windier! (Photo by Keenan Constance on Unsplash) |
Neither Chicago nor Seoul, Dhaka rarely experiences the strong breezes typical of such windy cities. However, superimposing wind data on a windrose diagram shows that the Southern and Eastern fronts are not entirely calm. At least 68% of the annual breezes come from the South, East, and Southeast (see Fig. 1 below). In the diagram, the yellow-shaded area represents the combined percentage of wind flow in Dhaka City. Strategically placing openings on the South and Southeast sides would enhance natural ventilation in buildings. Nevertheless, due to Dhaka’s equatorial location, shading design is essential to modulate solar gains during the summer months.
