AERODYNAMIC FORCE BY LAMB VECTOR INTEGRALS IN UNSTEADY COMPRESSIBLE FLOWS

The new aerodynamic force theory based on Lamb vector field integration, valid in general for unsteady and compressible flow regimes, provides an exact expression of the whole aerodynamic force. Different flavours of the steady formula have been developed in the last decades, with identification of lift-induced and parasite drag contributions subject of recent studies focusing on steady applications. To transfer the maturity achieved on compressible steady vortical methods to unsteady flows, different Lamb vector-based force formulas and decompositions are here extended to the unsteady regime and compared through numerical applications on twodimensional compressible flows with moving bodies.