Numerical Simulation and Analysis of Gas Film Stiffness on Static Dry Gas Seals of Reactor

Three-dimensional geometric models of static pressure dry gas seal under six different gas film thickness were established with SolidWorks software,which were meshed with Gambit software.In the same specific conditions,internal micro-groove three-dimensional space flow of six different gas film thickness were simulated by the software of Fluent,and then the flow field pressure distribution were gained.The relationship of the gas film thickness and open force were obtained to calculate open force under different gas membrane.Gas film thrust polynomial about gas film thickness was gained through applying least-squares rule to fit and gas film stiffness polynomial about gas film thickness was obtained.The results show that in order to build up the static pressure dry gas seal for the stable active status,the gas blanket rigidity is highly requested for static pressure dry gas seal.