Abstract: In response to the demand for efficient and accurate indoor thermal environment simulations in air conditioning system design, a numerical simulation software based on the Fluent platform was developed. Efficiency limitations in current methods for handling customized outlet zoning and boundary condition settings for diverse air conditioning units were identified as barriers to the rapid development of new models. To address these challenges, a loosely coupled algorithm was proposed and integrated within the Fluent platform to enable the fast simulation of custom models within an environmental chamber. A custom air conditioning grid model and outlet zoning tool were created to allow efficient setup of boundary conditions for each zone. Experimental results demonstrated significant improvements in simulation speed without compromising accuracy, effectively supporting the early-stage design and optimization of new air conditioning units. The developed software is shown to be valuable in reducing development cycles and enhancing simulation efficiency.

Key words: Fluent, Loose coupling, Software, Fast simulation