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Use your smartphone to scan this QR code and download this article ABSTRACT The basement car park is a popular solution to effectively use urban land, especially in commercial centers and apartments. However, the situation of apartment fire and explosion is a hot problem, partly due to the tunnel ventilation has not met the requirements of fire safety. Therefore, the design of the car park basement ensures fire safety as well as bring comfort to people. In this study, the computational fluid dynamics (CFD) method has been applied to determine the pressure and velocity intensity for buildings that detect residuals in architecture, thereby improving and providing an optimal solution. The Ansys CFX commercial software is used to simulate the ventilation process in a parking basement. In Ansys CFX, the Shear-Stress Transport turbulence model is used to determine the temperature and velocity of the tunnel and calculate the level of physical comfort according to ADPI standard. Firstly, a simulation problemof ventilation in theworkshop room is also performed to verify the reliability. Finally, the problem of basement temperature and wind velocity by natural ventilationmethod will be analyzed and evaluated in accordance with ADPI standard and carbonmonoxide concentrationwithWHO standard to identify areas of unsatisfactory temperature and velocity to reasonably adjust and propose other suitable ventilation options. The results from this study present a promising natural ventilation analysis procedure and technique for car parking basements of tall buildings in major cities.

Simulation of Naturally Ventilated Underground Car Park with CFD