Dry ring roller is the core equipment of the grinding system, and the stability of its internal flow field determines the system’s performance. The air ring structure, serving as a key component, significantly influences the internal flow field. However, current air ring structure designs primarily rely on empirical experience in practical production, with insufficient targeted research. To elucidate the influence mechanism of air ring structure on internal flow field stability, address design deficiencies, and optimize structural parameters, numerical simulation analysis of the internal flow field was implemented. Initially, a computational model of the entire flow domain was established, followed by an orthogonal experimental design for numerical simulations under different air ring configurations. Subsequently, comparative analysis of velocity fields and pressure fields across experimental groups was performed to investigate flow field variation trends. Finally, experimental results were systematically analyzed to determine the influence patterns of various structural parameters. Results demonstrate that the air ring structure plays a crucial role in pressure stabilization and airflow velocity control. The optimized air ring configuration significantly enhances flow field stability, with the optimal structural scheme being determined through the study.
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