Numerical Investigation of an Embedded-Configuration Evaporating Tube-Type Combustor

Abstract

To address the trend of the axial position of the inlet diffuser outlet extending downstream in micro/small aero-engine combustors, an embedded combustor layout is proposed, featuring the combustor liner head positioned forward within the cavity adjacent to the diffuser hub side, thereby effectively shortening the combustor length. Hot-state three-dimensional simulations were performed on this layout based on a specific MTF engine model. Its vortex structure and combustion organization characteristics were analyzed using the flow field, fuel spray field, temperature field, outlet temperature distribution, and wall temperature profiles. These findings provide a theoretical basis for the optimal design of this embedded combustor configuration.