Results 21 to 30 of about 122,095 (310)

Mean flow of turbulent–laminar patterns in plane Couette flow [PDF]

open access: yes, 2007
A turbulent–laminar banded pattern in plane Couette flow is studied numerically. This pattern is statistically steady, is oriented obliquely to the streamwise direction, and has a very large wavelength relative to the gap. The mean flow, averaged in time
DWIGHT BARKLEY   +3 more
core   +1 more source

Effects of polymer addition on transition and length scales of flow structures in transitional channel flow

open access: yesJournal of Fluid Science and Technology, 2023
The effect of polymer addition on transition to turbulence in a two-dimensional water-flow channel was experimentally investigated by flow visualization using reflective flakes.
Sattaya YIMPRASERT   +3 more
doaj   +1 more source

Theory to predict shear stress on cells in turbulent blood flow.

open access: yesPLoS ONE, 2014
Shear stress on blood cells and platelets transported in a turbulent flow dictates the fate and biological activity of these cells. We present a theoretical link between energy dissipation in turbulent flows to the shear stress that cells experience and ...
Khandakar Niaz Morshed   +3 more
doaj   +1 more source

Modeling Turbulent Flow in Stirred Tanks with CFD: The Influence of the Modeling Approach, Turbulence Model and Numerical Scheme [PDF]

open access: yes, 2004
Single phase turbulent flow in a tank stirred by a down- and an up-pumping pitched blade turbine has been simulated using CFD. The effect of the modeling approach, discretization scheme and turbulence model on mean velocities, turbulent kinetic energy ...
Fletcher, David F.   +2 more
core   +1 more source

Effect of the Inlet Boundary Conditions on the Flow over Complex Terrain Using Large Eddy Simulation

open access: yesDesigns, 2021
For large eddy simulation, it is critical to choose the suitable turbulent inlet boundary condition as it significantly affects the calculated flow field.
Yi Wang   +4 more
doaj   +1 more source

Decay of Turbulence in Pipe Flow [PDF]

open access: yesPhysical Review Letters, 2006
A novel experiment has been devised which provides direct evidence for critical point behavior in the longstanding problem of the transition to turbulence in a pipe. The novelty lies in the quenching of turbulence by reducing the Reynolds number and observing the decay of disordered motion. Divergence of the time scales implies underlying deterministic
Peixinho, Jorge, Mullin, Tom
openaire   +3 more sources

Numerical simulation of bubble dispersion in turbulent Taylor-Couette flow [PDF]

open access: yes, 2014
We investigate bubble dispersion in turbulent Taylor-Couette flow. The aim of this study is to describe the main mechanisms yielding preferential bubble accumulation in near-wall structures of the flow.
CLIMENT, Eric   +7 more
core   +1 more source

Modification of energetic modes for transitional flow control

open access: yesAIP Advances, 2022
We introduce a mechanism of using collocated serpentine shaped plasma actuators for controlling the flow via an input electrical signal to either advance or delay transition by amplification or annihilation of energetic modes of turbulent structures.
Arnob Das Gupta, Subrata Roy
doaj   +1 more source

Laminar-Turbulent Transition of an Inlet Boundary Layer in a Circular Pipe Induced by Periodic Ejection

open access: yesJournal of Fluid Science and Technology, 2011
The laminar-turbulent transition of a boundary layer induced by jet flow ejection in the inlet region of a circular pipe was experimentally investigated.
Masashi ICHIMIYA   +2 more
doaj   +1 more source

Turbulent bubbly flow in pipe under gravity and microgravity conditions [PDF]

open access: yes, 2012
Experiments on vertical turbulent flow with millimetric bubbles, under three gravity conditions, upward, downward and microgravity flows (1g, -1g and 0g), have been performed to understand the influence of gravity upon the flow structure and the phase ...
Colin, Catherine   +2 more
core   +1 more source

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