Velocity inlet variation impact on flooding in underground spaces

Underground space floods are a complex type of calamity mainly caused by increasing rainfall and temperature, along with urbanization and population growth necessitating the creation of underground spaces such as subway stations, underground parking lots, underground garages, etc. The causes above have contributed to the frequent and severe appearance of floods in underground spaces in recent decades. The situation is complicated, so further study and research are still needed.

This work applied numerical simulation using Fluent software to investigate, analyze, and compare the impact of altering the magnitude and type of inlet velocities on the underground space's flooding characteristics. Two types of velocities, fixed and transient velocities, were involved in the investigation.