Convex curvature concept of viscous drag reductionExperiments have indicated that for certain convex aerodynamic surface curvature ratios, wall-shear stresses remain low over considerable streamwide distances even after curvature is removed. The research whose progress is presently evaluated was first suggested by Bushnell (1983), who proposed that the convex-surface curvature be used in axisymmetric bodies to ascertain whether the viscous component of total drag is reduced. Attention is given to the evolution of the concept's implementation in an axisymmetric nose-body combination for passive viscous drag reduction.
Document ID
19910028073
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Bandyopadhyay, Promode R. (NASA Langley Research Center Hampton, VA, United States)