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Plate 1 shows the wind flow over the courtyard. Pressure coefficients are mainly low positive on the windward exterior elevation and low to medium negative in the courtyard.
Plate 2 indicates the air movement inside the courtyard. The patterns imply a combination of a downdraught of the wind passing over the courtyard and the flow through the staircase opening. Figure 1 illustrates this effect.
Figure 1: Air flow over the courtyard and inside it through the staircase opening
Plate 1 Wind flow from the north over the house and pressure coefficients
1
2
3
4
Plate 2: Air movements in the courtyard with north wind direction