CFD modelling of natural displacement ventilation in an enclosure connected to an atrium

Numerical evaluation of louver configuration and ventilation strategies for the windcatcher system

“…In contrast, a Renormalization Group (RNG) ke3 turbulence model adopting a rigorous statistical technique is similar in Yes Leeward form to the standard ke3 model except for the additional term in the 3 equation which significantly improves accuracy in relation to rapidly sprained flows [23,24]. Group (RNG) ke3 turbulence models were employed to predict the incompressible turbulent airflow in a room, because RNG ke3 turbulence generally provides good agreement with the experimental results and predicts better indoor airflow features than other eddy-viscosity models [1,25,26]. The general form of the governing equations can be generalized as:…”

“…Unlike conventional building methods, green architectural features, such as the windcatcher, solar chimneys, light wells and atria, increase the height of the column of warm air inside buildings which consequently increases the driving force of the stack effect [1]. In recent years, natural ventilation has also been attracting considerable interest in the field of green building design [2].…”

On the influence of boundary conditions and thermal radiation on predictive accuracy in numerical simulations of indoor ventilation

“…Although the buoyant force is actually quite small (on the order of 1 Pa [3]), the large area through which it acts can deliver a large volumetric flow rate:…”

Computational analysis of wind interactions for comparing different buildings sites in terms of natural ventilation

“…CFD has been widely used for simulation of wind and air movement in existing buildings. Literature is profuse in documents based on CFD direct application and experimental validation in order to design wind behaviour of NV in buildings [11][12][13][14][15][16][17][18][19]. Nevertheless, CFD has not been almost used in building early design stage, in which CFD can help building designer to achieve better and more detailed understanding of issues involving ventilation.…”