Large-Eddy Simulations of Wind-Driven Cross Ventilation, Part1: Validation and Sensitivity Study

Natural ventilation is gaining popularity in response to an increasing demand for a sustainable and healthy built environment, but the design of naturally ventilated building can be challenging due inherent variability operating conditions that determine natural flow. Large-eddy simulations (LES) have significant potential as analysis method flow, since they provide accurate prediction turbulent flow at any location computational domain. However, computationally expensive, few validation sensitivity studies been reported. The objectives this study are validate LES wind-driven cross-ventilation quantify solution grid resolution inflow boundary conditions. We perform isolated with two openings, using three different resolutions varying turbulence intensities. Predictions rate compared reference wind-tunnel experiment available from literature, we also age air efficiency. results show sufficiently fine needed predictions detailed pattern air, while condition found affect standard deviation instantaneous rate. case modeled paper, mean very robust, showing negligible or characteristics.