Influence of Rebound Characteristics on the Separation Efficiency of an Inertia Particle Separator

To explore the influence of particle rebound characteristics on the separation efficiency of an engine inertia particle separator, the effects of tangential/normal restitution coefficients on the separation performance were studied using Fluent software at different scavenging ratios and inlet Mach numbers, while their comprehensive influences on the separation efficiency were analyzed. Results show that under the normal restitution coefficient of 0.5, the separation efficiency of both AC coarse dust and C-spec sand increases first and then gets stable with the rise of tangential restitution coefficient at different scavenging ratios and inlet Mach numbers. The normal restitution coefficient changes with Mach number, but is not influenced by Scavenge ratio. The critical tangential/normal restitution coefficients are affected significantly by inlet Mach number and particle diameter when the separation efficiency tends to be stable.