Results 1 to 10 of about 245,469 (326)

Self-organized dynamics and the transition to turbulence of confined active nematics. [PDF]

Proc Natl Acad Sci U S A, 2019
Significance Topological defects are a ubiquitous feature of diverse materials ranging from superconductors to liquid crystals. In contrast to conventional materials where defects produce static field configurations, topological defects in energy ...
Opathalage A, Norton MM, Juniper MPN, Langeslay B, Aghvami SA, Fraden S, Dogic Z.   +6 more
europepmc   +3 more sources

Transition to turbulence in pulsating pipe flow [PDF]

Journal of Fluid Mechanics, 2017
Fluid flows in nature and applications are frequently subject to periodic velocity modulations. Surprisingly, even for the generic case of flow through a straight pipe, there is little consensus regarding the influence of pulsation on the transition ...
Hof, Björn, Ma, Xingyu, Song, Baofang, Warnecke, Sascha, Xu, Duo   +4 more
core   +2 more sources

Transition to Superfluid Turbulence [PDF]

Journal of Low Temperature Physics, 2006
Turbulence in superfluids depends crucially on the dissipative damping in vortex motion. This is observed in the B phase of superfluid 3He where the dynamics of quantized vortices changes radically in character as a function of temperature.
A.P Finne, A.P Finne, A.P Finne, A.P Finne, A.P Finne, D.A Abanin, E.B Sonin, G. E. Volovik, G.E Volovik, L Skrbek, L.D. Landay, M. Kobayashi, M. Krusius, N.B Kopnin, R Blaauwgeers, R. Hänninen, R. Schützhold, T. Ruokola, T.D.C. Bevan, V. B. Eltsov, V.B Eltsov, V.B Eltsov   +21 more
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Transition to turbulence in Taylor-Couette ferrofluidic flow. [PDF]

Sci Rep, 2015
Y.D. was supported by Basic Science Research Program of the Ministry of Education, Science and Technology under Grant No. NRF-2013R1A1A2010067. Y.C.L. was supported by AFOSR under Grant No.
Altmeyer S, Do Y, Lai YC.
europepmc   +4 more sources

Discontinuous transition to active nematic turbulence [PDF]

Nature Communications
Active fluids exhibit chaotic flows at low Reynolds number known as active turbulence. Whereas the statistical properties of the chaotic flows are increasingly well understood, the nature of the transition from laminar to turbulent flows as activity ...
Malcolm Hillebrand, Ricard Alert
doaj   +2 more sources

Transition to turbulence in duct flow [PDF]

Journal of Fluid Mechanics, 2008
The transition of the flow in a duct of square cross-section is studied. Like in the similar case of the pipe flow, the motion is linearly stable for all Reynolds numbers; this flow is thus a good candidate to investigate the 'bypass' path to turbulence.
ALESSANDRO BOTTARO, Boberg, DAMIEN BIAU, HOUSSAM SOUEID, Jones   +4 more
core   +5 more sources

Transition to turbulence in particulate pipe flow [PDF]

Physical Review Letters, 2003
We investigate experimentally the influence of suspended particles on the transition to turbulence. The particles are monodisperse and neutrally-buoyant with the liquid.
A. G. Darbyshire, D. J. Tritton, G. Segré, J. F. Morris, J.-P. Matas, O. Reynolds, P. G. Drazin, P. R. Nott, R. J. Phillips, É. Guazzelli   +9 more
core   +9 more sources

Transition to turbulence in particle laden flows [PDF]

Physical Review Letters, 2018
Suspended particles can alter the properties of fluids and in particular also affect the transition from laminar to turbulent flow. In the present experimental study, we investigate the impact of neutrally buoyant, spherical inertial particles on ...
Agrawal, Nishchal, Choueiri, George H., Hof, Björn   +2 more
core   +3 more sources

Subcritical versus supercritical transition to turbulence in curved pipes [PDF]

Journal of Fluid Mechanics, 2015
Transition to turbulence in straight pipes occurs in spite of the linear stability of the laminar Hagen--Poiseuille flow if the amplitude of flow perturbations as well as the Reynolds number exceed a minimum threshold (subcritical transition).
Braunshier, P., Hof, B., Kuhlmann, H., Kühnen, J., Schwegel, M.   +4 more
core   +2 more sources

Modeling the transition to turbulence in shear flows [PDF]

, 2011
One-dimensional models are presented for transitional shear flows. The models have two variables corresponding to turbulence intensity and mean shear.
Dwight Barkley, Vollmer
core   +2 more sources