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Acoustic Rising Microbubbles for Efficient Liquid Operations. [PDF]
Cyborg Bionic SystBai C +8 more
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Shear Flows and Turbulence in Nature
Computing in Science & Engineering, 2007Shear flows and turbulence have a major impact on the transport of quantities, from heat to material to pollutants. This article explores transport and its sensitivity to novel interactions between shear flow and turbulence.
David E. Newman +2 more
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The amplitude of turbulent shear flow
pure and applied geophysics, 1983A new formulation of the problem of the statistical stability of fully turbulent shear flow is proposed, in which one seeks mean fields that bound the observed flow from the stable side. In the spirit of maximum transport theory, this formulation admits a larger set of “flows” than are dynamically possible.
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Finite lifetime of turbulence in shear flows
Nature, 2006Generally, the motion of fluids is smooth and laminar at low speeds but becomes highly disordered and turbulent as the velocity increases. The transition from laminar to turbulent flow can involve a sequence of instabilities in which the system realizes progressively more complicated states, or it can occur suddenly. Once the transition has taken place,
Hof, Bjorn +4 more
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Comment on “Transition to turbulence in a shear flow”
Physical Review E, 2005In this Comment two main issues are addressed that are pertinent to the interpretation of the transition to turbulence for shear type flows on the basis of transient chaos: the fractal character associated with this transition and the precision needed for a reliable numerical modeling.
Fernando G, Basombrío, Gabriel, Campo
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Hydromagnetic turbulent shear flow—I
International Journal of Engineering Science, 1976Abstract Hydromagnetic turbulent shear flow between two infinite uniformly porous planes in the presence of (i) axial and (ii) transverse magnetic field was studied in Flow—I by adopting the semi-empirical approach first initiated by Kampe de Feriet[1] and developed later on by Pai[2,3] for studying turbulent shear flow through channels.
K.N. Mehta, R. Balasubramanyam
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Science, 1998
Achieving nuclear fusion in magnetically confined plasma has been frustrated by turbulence that rips the plasma apart. In his Perspective, Burrell discusses recent efforts to understand and control microturbulence-small-scale plasma eddies that dominate the loss of energy from tokamak plasmas. Such efforts include those reported by [ Lin et al. ][1] in
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Achieving nuclear fusion in magnetically confined plasma has been frustrated by turbulence that rips the plasma apart. In his Perspective, Burrell discusses recent efforts to understand and control microturbulence-small-scale plasma eddies that dominate the loss of energy from tokamak plasmas. Such efforts include those reported by [ Lin et al. ][1] in
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Prediction of Hemolysis in Turbulent Shear Orifice Flow
Artificial Organs, 1996AbstractThis study proposes a method of predicting hemolysis induced by turbulent shear stress (Reynolds stress) in a simplified orifice pipe flow. In developing centrifugal blood pumps, there has been a serious problem with hemolysis at the impeller or casing edge; because of flow separation and turbulence in these regions.
Masaaki, Tamagawa +2 more
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Turbulence modelling for complex shear flows
18th Fluid Dynamics and Plasmadynamics and Lasers Conference, 1985The turbulence models available for the prediction of complex turbulent shear layers are reviewed in this paper, concentrating mainly on three-dimensional flows, flows subjected to curvature and body rotation, separated flows, and vortex flows. A critical review of zero-equation, one-equation, two-equation, algebraic Reynolds stress, and full Reynolds ...
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Numerical simulations of turbulent shear flows
Applied Scientific Research, 1993We simulate three-dimensional mixing layers, isotropic turbulence, and rotating turbulence. In the mixing-layer case, we show that high compressibility inhibits helical pairings obtained in the incompressible case, yielding a staggered array of large A-shaped vortices.
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