Effects of boundary layer transition on the aerodynamic analysis of high-lift systems
Sign Up to like & getrecommendations! Published in 2019 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2019.04.051
Abstract: Abstract Transition to turbulence is known as a factor that impacts the performance of high-lift devices, but only a few numerical results that include transition are available in the literature. We use the Langtry-Menter γ… read more here.
Keywords: topology; transition; high lift; transition turbulence ... See more keywords
Conditions for turbulent Ekman layers in precessionally driven flow
Sign Up to like & getrecommendations! Published in 2021 at "Geophysical Journal International"
DOI: 10.1093/gji/ggab088
Abstract: Ekman layers develop at the boundaries of the Earth’s fluid core in response to precession. Instabilities in these layers lead to turbulence when a local Reynolds number, Re, based on the thickness of the Ekman… read more here.
Keywords: ekman layers; turbulence; transition turbulence; precessionally driven ... See more keywords
Transition to turbulence in quasi-two-dimensional MHD flow driven by lateral walls
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.6.013901
Abstract: We investigate MHD-Couette--Shercliff flows driven by lateral wall motion with turbulent transitions observed only at supercritical Re. Linearly, the Tollmien--Schlichting (TS) wave instability was isolated at each wall for friction parameter H $\ensuremath{\gtrsim}$ 300 in… read more here.
Keywords: mhd; driven lateral; turbulence quasi; flow ... See more keywords
Phase Transition to Turbulence in Spatially Extended Shear Flows
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review Letters"
DOI: 10.1103/physrevlett.128.014502
Abstract: Lukasz Klotz, 2 Grégoire Lemoult, Kerstin Avila, 5 and Björn Hof ∗ Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria Institute of Aeronautics and Applied Mechanics, Warsaw University of Technology, Nowowiejska… read more here.
Keywords: spatially extended; turbulence spatially; extended shear; phase transition ... See more keywords
Impact of Blood Rheology On Transition to Turbulence and Wall Vibration Downstream of a Stenosis.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of biomechanical engineering"
DOI: 10.1115/1.4055856
Abstract: Previous experimental flow studies have demonstrated a delay (~20%) in transition to turbulence for whole blood compared to a Newtonian analog fluid in both a straight pipe and eccentric stenosis model with ridged walls. The… read more here.
Keywords: rheology; transition turbulence; turbulence; blood ... See more keywords
Wavy Walls, a Passive Way to Control the Transition to Turbulence. Detailed Simulation and Physical Explanation
Sign Up to like & getrecommendations! Published in 2021 at "Energies"
DOI: 10.3390/en14133937
Abstract: Inducing spanwise motions in the vicinity of solid boundaries alters the energy, mass and/or momentum transfer. Under some conditions, these motions are such that drag is reduced and/or transition to turbulence is delayed. There are… read more here.
Keywords: transition; wavy walls; control; transition turbulence ... See more keywords