... predicted by the hybrid method is more agreeable with experiment than the other methods. The benefit of the present method is the ability to calculate accurate rotordynamic characteristics of annular seals that are comparable to results produced by full, transient CFD analyses with a simulation time...

... condition, destabilizing forces due to cross-coupled stiffness coefficients have in some cases been identified as the cause for rotordynamic instabilities. In 2005, Childs et al. ( 2 ) presented test results for short annular seals including a smooth seal and seals with one and three grooves...