TY - JOUR TI - Numerical simulation research on two-phase flow motion and heat distribution characteristics in epidemic prevention surveillance vehicles AU - Liu Enhai AU - Chen Gengyang AU - Wei Xiaoyong AU - Yang Siting AU - Peng Mingguo AU - Bai Biaocai AU - Jiang Yine JN - Thermal Science PY - 2026 VL - 30 IS - 2 SP - 1017 EP - 1026 PT - Article AB - The dynamics of two-phase flow and the thermal distribution characteristics within an epidemic prevention surveillance vehicle exert a profound influence on the risk of cross-infection among occupants and their comfort levels. In this study, numerical simulation techniques are employed to comprehensively analyze the two-phase flow motion and thermal distribution characteristics inside the vehicle. Specifically, the research explores the impact of modular temperature and humidity control on two-phase flow behavior and spatial thermal distribution. The findings indicate that the maximum aerosol concentration recorded was 7.2×10-17 μg/m3 at a height of 1.5 m above the vehicle floor. Additionally, as the temperature rises, the intensity of the two-phase flow motion concomitantly increases, while the level of humidity exhibits an inverse trend. From the perspective of in-vehicle comfort, the modular temperature and humidity zoning control approach contributes to a more homogeneous distribution of air velocity and temperature within the epidemic prevention surveillance vehicle. Consequently, this configuration offers an augmented level of thermal comfort for both medical personnel and patients DO - 10.2298/TSCI2602017L ER -