Numerical Airframe Aerodynamic Performance Prediction: An Exergy Point of View.

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

1 ONERA - The French Aerospace Lab [Meudon]

The prediction of the aerodynamic performance of airframe has been historically made via the determination and decomposition of the force opposing the aircraft motion: drag. The paper presents an innovative energy approach which is based on the destruction of exergy by irreversible processes. A required step in the development process is to validate its numerical implementation via various CFD test cases: 2D aerofoil and 3D wing RANS test cases are presented in subsonic and transonic regimes. Mesh convergence studies prove the exergy approach to have a similar accuracy as the traditional near-field drag approach while offering a phenomenological breakdown comparable to a far-field formulation.

Domaines: Dynamique des Fluides [physics.flu-dyn]; Physique de l'espace [physics.space-ph]

A. Arntz, O. Atinault, D. Destarac. Numerical Airframe Aerodynamic Performance Prediction: An Exergy Point of View.. 49th International Symposium of Applied Aerodynamics, Mar 2014, LILLE, France. ⟨hal-01059075⟩