].
In the current paper, a coupled Computational Fluid Dynamics
(CFD) approach (e.g. Refs. [19,23,31e37]) is employed using the 3D
steady Reynolds-Averaged NaviereStokes (RANS) equations. The
coupled approach enables a detailed analysis of the indoor and
outdoor airflow by conducting one CFD simulation in which the
indoor and outdoor airflow are modeled simultaneously and within
the same computational domain. Section 2 presents the building
geometries that are studied. The validation study using Particle
Image Velocimetry (PIV) measurements of upward crossventilation
from literature is presented in Section 3, after which
the CFD model for the case study is outlined in Section 4. The results
are presented in Section 5 and Section 6. Discussion (Section
7) and conclusions (Section 8) conclude this paper.