부산대학교 도서관

This paper presents the effect of the supply port configuration and air change rate on ventilation effectiveness. Three different configurations are used with three air change rates implemented for each configuration to learn more about the standards used to choose the best design concept and the best air change rates to satisfy human comfort. While in earlier studies the effectiveness of ventilation using one inlet configuration with one air change rate was the main focus of the displacement ventilation strategy. To accurately carry out the design iterations, this study is conducted using 3D steady-state Reynolds-averaged Navier-Stokes (RANS) CFD simulations. To precisely assess ventilation effectiveness and velocity distribution, five turbulence models are compared and validated with respect to the experimental data available in the literature where SST k-w shows the best agreement with the experimental data. The results show that the ventilation effectiveness is more sensitive to the air change rate than the supply inlet configuration. By conducting the analysis using various concepts and inflow conditions, this research seeks to add more to the work of past studies.