Static Analysis of a Spiral-Groove Dry Gas Seal with an Inner Annular Groove
带内环槽的螺旋槽干式气体端面密封的静压性能

A two-dimensional Reynolds equation was established for pressure prediction of the isothermal compressible gas film between the two faces of a spiral groove dry gas face seal with an inner annular groove.The sealing performance,such as opening force,leakage rate,axial film stiffness and the ratio of film stiffness to leakage were calculated by finite element method only considering hydrostatic effect of gas film,and comparison with typical spiral groove gas face seal(S-DGS) were made.The former method run b...