Effects of leading-edge flap oscillation on unsteady delta wing flow and rock controlThe isolated and interdisciplinary problems of unsteady fluid dynamics and rigid-body dynamics and control of delta wings with and without leading-edge flap oscillation are considered. For the fluid dynamics problem, the unsteady, compressible, thin-layer Navier-Stokes (NS) equations, which are written relative to a moving frame of reference, are solved along with the unsteady, linearized, Navier-displacement (ND) equations. The NS equations are solved for the flowfield using an implicit finite-volume scheme. The ND equations are solved for the grid deformation, if the leading-edge flaps oscillate, using an ADI scheme. For the dynamics and control problem, the Euler equation of rigid-body rolling motion for a wing and its flaps are solved interactively with the fluid dynamics equations for the wing-rock motion and subsequently for its control. A four-stage Runge-Kutta scheme is used to explicitly integrate the dynamics equation.
Document ID
19910059024
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kandil, Osama A. (Old Dominion Univ. Norfolk, VA, United States)
Salman, Ahmed A. (Old Dominion University Norfolk, VA, United States)