An experimental investigation into spatiotemporal intermittencies in turbulent channel flow close to transition
Sign Up to like & getrecommendations! Published in 2019 at "Experiments in Fluids"
DOI: 10.1007/s00348-019-2739-9
Abstract: Experiments are presented to characterize low- and high-drag turbulence events in channel flows close to transition, which last for a certain duration, at friction Reynolds numbers ranging from $$Re_\tau\,=\,$$Reτ= 70–100. The spatiotemporal intermittencies are identified by… read more here.
Keywords: experimental investigation; spatiotemporal intermittencies; low drag; high drag ... See more keywords
An improved viscoelastic k- ε -v2-f turbulence model for intermediate and high drag reduction regimes
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0224157
Abstract: In this work, an improved anisotropic k-ε-v2-f model based on the finite extensible nonlinear elastic model with the Peterlin approximation for viscoelastic channel flows is proposed. This model is tested using direct numerical simulation (DNS)… read more here.
Keywords: drag reduction; reduction regimes; intermediate high; high drag ... See more keywords