Results 21 to 30 of about 22,502 (309)

A Robust Control Approach to Understanding Nonlinear Mechanisms in Shear Flow Turbulence [PDF]

open access: yes, 2010
A robust control framework is used to investigate a streamwise constant projection of the Navier Stokes equations for plane Couette flow. Study of this streamwise constant model is motivated by both numerical and experimental observations that suggest ...
Gayme, Dennice F. Maynard
core   +1 more source

Effect of turbulence intensity and gradient of turbulence intensity on airfoil aerodynamic characteristics at low Reynolds number

open access: yesXibei Gongye Daxue Xuebao, 2021
Based on the complex flow field of vertical takeoff and landing (VTOL) aircraft with distributed propulsion, the influence of the turbulence intensity and gradient of turbulence intensity on the aerodynamic characteristics of two-dimensional airfoil ...

doaj   +1 more source

Developments in turbulence research: a review based on the 1999 Programme of the Isaac Newton Institute, Cambridge [PDF]

open access: yes, 2001
Recent research is making progress in framing more precisely the basic dynamical and statistical questions about turbulence and in answering them.
Vassilicos, J. C.   +11 more
core   +1 more source

Direct Numerical Simulations of the Pulsating Flow over a Plane Wall

open access: yesJournal of Marine Science and Engineering, 2020
The results of direct numerical simulations of the flow generated in a plane duct by a pressure gradient which is the sum of two terms are described.
Giovanna Vittori   +2 more
doaj   +1 more source

Turbulence vertical structure of the boundary layer during the afternoon transition [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
We investigate the decay of planetary boundary layer (PBL) turbulence in the afternoon, from the time the surface buoyancy flux starts to decrease until sunset.
C. Darbieu   +10 more
doaj   +1 more source

Extreme events in transitional turbulence [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2022
Transitional localized turbulence in shear flows is known to either decay to an absorbing laminar state or to proliferate via splitting. The average passage times from one state to the other depend super-exponentially on the Reynolds number and lead to a crossing Reynolds number above which proliferation is more likely than decay.
Sébastien Gomé   +2 more
openaire   +3 more sources

Effect of Different Subgrid-Scale Models and Inflow Turbulence Conditions on the Boundary Layer Transition in a Transonic Linear Turbine Cascade

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2021
The aim of this work is to study the influence of different subgrid-scale (SGS) closure models and inflow turbulence conditions on the boundary layer transition on the suction side of a highly loaded transonic turbine cascade in the presence of high free-
Ettore Bertolini   +2 more
doaj   +1 more source

Laminar Turbulent Transition in a Boundary Layer Subjected to Weak Free Stream Turbulence

open access: yesJournal of Fluid Science and Technology, 2008
For revealing the transition process in a flat plate boundary layer subjected to a weak free stream turbulence, flow visualization and hot-wire measurements were performed. A weak free stream turbulence was generated by a turbulence grid mounted upstream
Toshiaki KENCHI   +2 more
doaj   +1 more source

Global bifurcations to subcritical magnetorotational dynamo action in Keplerian shear flow [PDF]

open access: yes, 2013
Magnetorotational dynamo action in Keplerian shear flow is a three-dimensional, non-linear magnetohydrodynamic process whose study is relevant to the understanding of accretion processes and magnetic field generation in astrophysics.
Cossu, Carlo   +12 more
core   +1 more source

Experiments on wave turbulence : the evolution and growth of second sound acoustic turbulence in superfluid 4He confirm self-similarity. [PDF]

open access: yes, 2010
We report our experiments on the formation of second sound acoustic turbulence in superfluid 4He. The initial growth in spectral amplitude follows power laws that steepen rapidly with increasing harmonic number n, corresponding to a propagating front in ...
P V E McClintock   +9 more
core   +1 more source

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