Numerical Investigation on Separation Efficiency of a Novel Hybrid Engine Air-Particle Separator

This paper proposes a novel design for hybrid engine air-particle separator filter (HEAPS) that combines the vortex tube (VTS) with inertial particle (IPS) to enhance separation efficiency. Helicopters often operate in harsh environments, such as deserts, and landing on unprepared runways poses severe risk turboshaft engines due ingestion of dust sand. can result significant damage engine's rotating components, impacting its life, reliability, performance. To protect from erosion damage, an air system (EAPS) is installed inlet. In this study, comparative numerical simulation was conducted between VTS using commercial software ANSYS Fluent. The Reynolds-averaged Navier–Stokes equations (RANS) were used simulate incompressible turbulent flow, trajectory particles tracked Discrete Phase Model (DPM). Particle trajectories efficiency analyzed different sizes, inlet velocities, bypass mass flow ratios scavenge channel core channel. results show provides excellent efficiency, recovery over 97%.