*3.2.7 Initial and boundary conditions*

The boundary conditions (**Table 4**) and the initial conditions are then set. The reasonable set up of physical quantities at the boundaries of the flow domain affect the overall accuracy of the CFD model. Initial conditions are essential for all CFD model. **Figure 8** indicates the point where solar radiation effect is introduced into the model, **Figure 9** shows the points initially set as flow outlets into the lecture hall, while **Figure 10** shows the wind inlet into the model. It is noted that an open corridor exists under the hanging roof and aid inflow to the lecture hall as shown in **Figures 8**–**10**.
