Dry gas seal (DGS) is a novel sealing method with broad prospects in various shaft sealing applications. it is vital for the design of dry gas seals to achieve flow field information by numerical method, including the influences of the Parameters of DGS on sealing performance. Based on FLUENT, this paper explores the three-dimensional (3D) flow fields of the DGS of spiral groove and T-groove at different rotation speeds, outer radius pressures and gas film thicknesses, and obtains the numerical

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... features (e.g. pressure distribution) of the DGS under different working conditions. The results show that the rotation speed of the DGS has a promoting effect on the hydrodynamic effect, while the outer radius pressure and gas film thickness both suppress the hydrodynamic effect. The research findings provide an important reference for the design and manufacturing of fluid machines like pumps and stirring reactors.