8.8% lower than that of the convex roof geometry E2, as previously
shown in Fig. 6. This is in line with the findings of the authors for a
single-span roof with a depth of 6 m [27], which highlighted that
convex roof geometries reach higher volume flow rates than
concave roof geometries. Note that the geometries in the present
study have an inclination angle of 18, which is lower than in the
previous study, where it was 27
.
5.2. Double-span leeward sawtooth roof geometries
The performance of double-span leeward sawtooth roof geometries
is analyzed systematically by comparison with the corresponding
single-span cases (i.e., straight, concave and convex). For
all geometries, the corresponding single-span roof geometry is
selected as the reference case. Table 2 provides an overview of the
pressure coefficients at the inlet and outlet openings for all doublespan
leeward sawtooth roof geometries, and for the single-span
roof geometries. A detailed analysis is provided in the following
subsections.