Some recent developments in the Lamb vector based aerodynamic force breakdown used the concept of vortex force in order to define the lift and to decompose the drag into lift-induced drag and profile drag. However, the Lamb vector formulation is based on moments and the associated force breakdown may depend on the reference point adopted for their computation. Yet, the force acting on an airplane cannot be dependent on this point. Thus, a systematic method based on the far field flow symmetries is here proposed in order to get rid of this dependence. A new formulation is then defined and tested for a two-dimensional transonic flow around an OAT15A airfoil and a three-dimensional flow around the wing of the NASA Common Research Model.
A reference point invariant Lamb vector based aerodynamic force breakdown in steady compressible flows / Camille, Fournis; Didier, Bailly; Tognaccini, Renato. - In: AIAA PAPER. - ISSN 0146-3705. - (2020), pp. 1-19. [10.2514/6.2020-1996]
A reference point invariant Lamb vector based aerodynamic force breakdown in steady compressible flows
TOGNACCINI, RENATO
2020
Abstract
Some recent developments in the Lamb vector based aerodynamic force breakdown used the concept of vortex force in order to define the lift and to decompose the drag into lift-induced drag and profile drag. However, the Lamb vector formulation is based on moments and the associated force breakdown may depend on the reference point adopted for their computation. Yet, the force acting on an airplane cannot be dependent on this point. Thus, a systematic method based on the far field flow symmetries is here proposed in order to get rid of this dependence. A new formulation is then defined and tested for a two-dimensional transonic flow around an OAT15A airfoil and a three-dimensional flow around the wing of the NASA Common Research Model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
