1. Introduction
Elongated naturally-ventilated buildings are used in a wide
range of applications, such as hospitals, schools, industrial facilities,
commercial buildings and even residential buildings. However, in
elongated naturally-ventilated buildings, the cross-ventilation ef-
ficiency can become problematic as the ventilation rate generally
decreases with the building length [1]. Long low-rise buildings with
a flat roof require a significant increase of the pressure differences
over the building to overcome the higher indoor resistance due to
the larger distance between the inlet and outlet opening. However,
buildings with side-wall and roof openings can increase the
ventilation flow rate [2,3] and can therefore be an option for the
ventilation of elongated buildings. For instance, a leeward sawtooth
roof building, with inlet openings at the lower part of the windward
facade and outlet openings at roof level, might still achieve enough
efficient cross-ventilation in elongated buildings. Furthermore,
compared to elongated buildings with a flat roof, buildings with a
leeward sawtooth roof can achieve more uniform and higher
daylight intensity levels due to the openings in the roof construction
[4]