A variety of skin-friction drag reduction (FDR) methods for turbulent boundary layer (TBL)
flows are reviewed. Both passive and active methods of drag reduction are discussed, along …

Turbulent drag reduction by additives is an effective approach to save energy in wall
turbulence. Improvement of this approach requires a better understanding of the interactions …

Polymer drag reduction, diffusion and degradation in a high-Reynolds-number turbulent
boundary layer (TBL) flow were investigated. The TBL developed on a flat plate at free …

The effects of polymer additives on decaying isotropic turbulence are numerically
investigated using a hybrid approach consisting of Brownian dynamics simulations for an …

This text presents the state of the art in friction drag/resistance reduction technologies for
BODIES and crafts operating in liquids at and beneath the free surface. It is useful for …

Commercial water tunnels typically generate a momentum thickness based Reynolds
number (Re θ)∼ 1000, which is slightly above the laminar to turbulent transition. The current …

A developing turbulent boundary layer (TBL) was created using a uniform concentration of
drag-reducing polymer for which the mean molecular weight was controlled and monitored …

Drag reduction is vitally important for marine applications, and a promising means of
reducing the turbulent frictional drag in external flow is polymer injection. In this paper, the …

Mechanical degradation of dilute solutions of polyethylene oxide (PEO) via chain scission
was investigated within a turbulent pipe flow. Comparisons of the drag reduction …

This study reexamines past studies of how drag-reducing polymer solutions modify the log-
region of a developing turbulent boundary layer (TBL). The classical view was that the …