wcm.02.2025.172.180

The mixing process of water and air is critical in various engineering applications, such as heat exchangers and atomization systems. This study numerically investigates the thermal and velocity distributions in a water-air mixing chamber using the Computational Fluid Dynamics (CFD) approach in ANSYS/FLUENT 16. The objective is to analyze how different inlet velocities influence temperature distribution and mixing efficiency to optimize thermal management in industrial applications. Numerical simulations were conducted for various inlet velocity pairs, including (V1 = 0.1 m/s, V2 = 0.1 m/s) and (V1 = 0.5 m/s, V2 = 0.1 m/s). The results indicate that increasing the inlet velocity of water enhances heat transfer efficiency. For instance, at point 1, the temperature increased from 298 K to 300 K for V1 = 0.1 m/s and V2 = 0.1 m/s, while it rose from 335 K to 330 K when V1 was 0.5 m/s. Similarly, at point 2, the temperature improved from 296 K to 302 K for higher air velocities, highlighting better thermal mixing. Velocity distributions further confirmed that higher air velocities promoted more uniform mixing patterns within the chamber. The findings emphasize that inlet velocities significantly affect temperature uniformity and mixing efficiency, providing insights for optimizing heat transfer in industrial fluid systems. This research lays the foundation for further investigations into fluid coupling mechanisms and advanced thermal control strategies.