Exergy-based Aircraft Aeropropulsive Performance Assessment: CFD Application to Boundary Layer Ingestion

A. Arntz (1) , O. Atinault (1) , D. Destarac (1) , A. Merlen (2)

1 ONERA - The French Aerospace Lab [Meudon]
2 ONERA - The French Aerospace Lab [Palaiseau]

Aircraft have evolved into extremely complex machines that require adapted tools to allow efficient design process. A performance formulation based on an exergy balance is under development at ONERA for assessing future aircraft configurations. A control volume analysis is performed to relate the exergy supplied by the propulsion system, its partial destruction within the control volume and the aircraft mechanical equilibrium. The formulation does not rely on the expression of thrust and drag and is therefore especially suitable for the performance evaluation of blended-wing bodies with boundary layer ingestion. A first step towards such applications is the investigation of a more academic configuration consisting in the ingestion of the complete wake of a simplified fuselage. Investigation is made via 3D RANS computations and it is shown that the benefit is due to lower levels of exergy destruction in the wake/jet of the BLI configuration.

Mots clés: EXERGY; BLI; FFD; FFX

Domaines: Milieux fluides et réactifs

A. Arntz, O. Atinault, D. Destarac, A. Merlen. Exergy-based Aircraft Aeropropulsive Performance Assessment: CFD Application to Boundary Layer Ingestion. AIAA AVIATION 2014, Jun 2014, ATLANTA, United States. ⟨hal-01068957⟩