Three-dimensional simulation of slender delta wing rock and divergenceComputational simulation of three-dimensional flows around a delta wing undergoing rock and roll-divergence motions is presented. The problem is a multidisciplinary one where fluid-dynamics equations and rigid-body-dynamics equations are sequentially solved. For the fluid-dynamics part, the unsteady Euler equations, which are written relative to a moving frame of reference, are solved using an implicit, approximately-factored, central-difference, finite-volume scheme. For the rigid-body dynamics part, the Euler equation of rigid-body rolling motion is solved using a four-stage Runge-Kutta scheme. Since the applications do not include deforming wings or relative-rigid-body motions, the computational-fluid-dynamics grid, which is fixed in the moving frame of reference, does not need to be updated once it is generated.
Document ID
19920043110
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kandil, Osama A. (NASA Langley Research Center Hampton, VA, United States)
Salman, Ahmed A. (Old Dominion University Norfolk, VA, United States)