Simulation and optimization research on the induced ventilation system in Peacetime of civil air defense underground garage combined with peacetime and wartime

Abstract

Civil air defense construction advocates the combination of peacetime and wartime. Under this background, according to the needs of civil air defense planning, many underground garages take into account the requirements of civil air defense projects in their construction. The ventilation system of civil air defense underground garage combined with peacetime and wartime is related to the air quality in the garage in peacetime and the safety of masking personnel in wartime. The evaluation and optimization of the ventilation system performance is very important. In the Peace Age, the ventilation system of civil air defense combined with peacetime and wartime works more in peacetime. This paper takes an underground garage of civil air defense combined with peacetime and wartime in Jinan, Shandong Province as the research object. By using computational fluid dynamics (CFD) technology and actual working conditions in peacetime, the numerical simulation of airflow organization and pollutant CO concentration field during ventilation of ductless induced system in underground garage is carried out, and the distribution characteristics of airflow organization velocity field, temperature field and CO concentration field in garage are analyzed. The results show that the optimized induced ventilation system of civil air defense underground garage combined with peacetime and wartime can effectively dilute and discharge CO and other pollutants in peacetime, play a good ventilation effect, and make the air distribution of underground garage more uniform, achieving the purpose of improving and optimizing the air quality of the underground garage. As a result it has a good promotion prospect.