Comprehensive review of jet and wall boundary condition impacts on anteroom smoke containment: A building fire safety perspective

In building fire safety engineering, mechanically pressurized air supply systems have become a critical solution for smoke prevention due to their stability and adaptability compared to natural ventilation, particularly in anterooms and stairwells. This study systematically investigates the operational mechanisms of such systems by addressing three critical knowledge gaps: (1) the effect of wall boundary conditions on the effectiveness of smoke protection in anteroom is inadequate, (2) limited understanding of confined space flow dynamics, and (3) no study has analyzed the importance of jet boundary conditions versus wall boundary conditions on the effectiveness of smoke protection in anterooms. By combining orthogonal experimental design and Computational Fluid Dynamics (CFD) simulations, we have further clarified that wall boundary conditions have a large impact on the effectiveness of smoke protection in anterooms, and therefore lay the foundation for further research in later stages. The main results of the study showed that the three indicators of temperature, co concentration and heat release rate were judged by orthogonal tests, and it was found that the co concentration did not exceed 600 ppm in most of the working conditions, so it was considered to be a secondary indicator, and it was found that the polarity of the air supply outlet size was 0.304, which had the greatest influence, followed by the length of the anteroom, which had a polarity of 0.249. The main innovation of this study is to further clarify the wall boundary conditions on the effectiveness of smoke protection in the anteroom is there is a greater impact on the follow-up still need to expand this aspect of the study, and a review of previous research in this area, explaining the limitations of the previous research and summarise the previous research methodology, laying the groundwork for the subsequent study.