Study on the Dynamic Sealing Characteristics of Microscale Flow Field in Dry Gas Seals
Taking the spiral groove dry gas seal micro-gas film as the research object,the three-dimensional micro-gas film flow model was established by Soldworks software,the three-dimensional flow gas film model was structured meshing with the help of ANSYS-ICEM,and then Fluent was imported to calculate the gas film flow field,and the influence of different rotation speeds and pressures on the sealing performance of the micro-gas film was studied.In addition,the centrifugal inertia effect generated at high rotational speed increases the amount of gas flowing out of the microchannel per unit time,i.e.,the leakage rate increases.At a certain speed,with the continuous increase of the inlet pressure of the spiral groove,the opening force of the gas film in the microchannel is enhanced,and the amount of gas leaked outward under the impetus of high pressure difference also increases.
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