Results 21 to 30 of about 3,253,485 (285)

Laminarization of inhomogeneous turbulent channel flow under stable density stratification

open access: yesJournal of Fluid Science and Technology, 2021
Effects of buoyancy force stabilizing the disturbances are investigated on a turbulent channel flow bounded by two walls of different temperatures. With a constant mean pressure gradient imposed, the buoyancy force related to the Grashof number (Gr) is ...
Oaki IIDA, Yoshito NAGASE
doaj   +1 more source

Computation of turbulent flows [PDF]

open access: yes7th Fluid and PlasmaDynamics Conference, 1974
Substantial advances made over the past decade in the prediction of turbulent flows are discussed. There was extensive work in the development of turbulence models, particularly for use in boundary layer calculations. Basic aspects of several important methods based on partial differential equations for the mean velocity field and turbulence quantities,
openaire   +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

Comparison of flow and dispersion properties of free and wall turbulent jets for source dynamics characterisation [PDF]

open access: yes, 2009
The objective of this paper is to provide an investigation, using large eddy simulations, into the dispersion of aircraft jets in co-flowing take-off conditions.
Aloysius, SS, Wrobel, LC
core   +7 more sources

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

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

Simulation of rough wall turbulent channel flow using a parametric forcing approach [PDF]

open access: yes, 2011
The effects of rough walls on turbulent channel flow are simulated by adding a simple forcing term to the Navier-Stokes equations. An extensive parameter study is used to explore the effects of this term on turbulent channel flow.
Busse, A., Busse, A.E., Sandham, N.D.
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

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