Results 21 to 30 of about 245,469 (326)
From bypass transition to flow control and data-driven turbulence modeling: An input-output viewpoint [PDF]
Annual Review of Fluid Mechanics, 2020 Transient growth and resolvent analyses are routinely used to assess nonasymptotic properties of fluid flows. In particular, resolvent analysis can be interpreted as a special case of viewing flow dynamics as an open system in which free-stream ...
M. Jovanovi'c
semanticscholar +1 more source
Transition to turbulence in shear flows [PDF]
Physica A: Statistical Mechanics and its Applications, 2018 Pipe flow and many other shear flows show a transition to turbulence at flow rates for which the laminar profile is stable against infinitesimal perturbations.
B. Eckhardt
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Universal continuous transition to turbulence in a planar shear flow [PDF]
Journal of Fluid Mechanics, 2017 We examine the onset of turbulence in Waleffe flow – the planar shear flow between stress-free boundaries driven by a sinusoidal body force. By truncating the wall-normal representation to four modes, we are able to simulate system sizes an order of ...
M. Chantry, L. Tuckerman, D. Barkley
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Intermittency and Critical Scaling in Annular Couette Flow
Entropy, 2020 The onset of turbulence in subcritical shear flows is one of the most puzzling manifestations of critical phenomena in fluid dynamics. The present study focuses on the Couette flow inside an infinitely long annular geometry where the inner rod moves with
Kazuki Takeda +2 more
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The critical point of the transition to turbulence in pipe flow [PDF]
Journal of Fluid Mechanics, 2017 In pipes, turbulence sets in despite the linear stability of the laminar Hagen–Poiseuille flow. The Reynolds number ( $Re$ ) for which turbulence first appears in a given experiment – the ‘natural transition point’ – depends on imperfections of the set ...
V. Mukund, B. Hof
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Energies, 2021 Transition to turbulence and changes in the fluid flow structure are subjects of continuous analysis and research, especially for unique fields of research such as the thermo-magnetic convection of weakly magnetic fluids.
Anna Kraszewska, Janusz Donizak
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A universal transition to turbulence in channel flow [PDF]
Nature Physics, 2015 Experiments and simulations of the transition to turbulence in fluid flow through a quasi-2D channel reveal critical exponents consistent with directed percolation — long conjectured to be the universality class associated with the transition. Transition
M. Sano, Keiichi Tamai
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Study of Transition to Turbulence in a Supersonic Boundary Layer Using DNS and Transition Prediction
Journal of Fluid Science and Technology, 2007 The current understanding of supersonic boundary layer transition is reviewed in this paper. The material focuses on bypass transition in a plane supersonic boundary layer. Recent advances in DNS and engineering prediction of transition are discussed. It
Hiroshi MAEKAWA
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International Journal of Turbomachinery, Propulsion and Power, 2020 An algebraic intermittency model for boundary layer flow transition from laminar to turbulent state, is extended using an experimental data base on boundary layer flows with various transition types and results by large eddy simulation of transition in a
Slawomir Kubacki +3 more
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Transition to turbulence in suspension Taylor-Couette flow [PDF]
EPJ Web of ConferencesThe pattern transition routes to turbulence are explored via experiments in a Taylor-Couette setup for neutrally-buoyant suspensions of non-colloidal particles in the counter-rotation regime.
Alam Meheboob, Ghosh Manojit
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