Results 11 to 20 of about 10,441,290 (359)
Population Dynamics At High Reynolds Number [PDF]
Physical Review Letters, 2010 We study the statistical properties of population dynamics evolving in a realistic two-dimensional compressible turbulent velocity field. We show that the interplay between turbulent dynamics and population growth and saturation leads to quasi-localization and a remarkable reduction in the carrying capacity. The statistical properties of the population
Perlekar, P +3 more
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Reynolds number effects on the Reynolds-stress budgets in turbulent channels [PDF]
Physics of Fluids, 2008 Budgets for the nonzero components of the Reynolds-stress tensor are presented for numerical channels with Reynolds numbers in the range Reτ=180–2000. The scaling of the different terms is discussed, both above and within the buffer and viscous layers. Above x2+≈150, most budget components scale reasonably well with uτ3/h, but the scaling with uτ4/ν is
Hoyas, Sergio, Jiménez Sendín, Javier
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Low-Reynolds-number swimming in gels [PDF]
EPL (Europhysics Letters), 2010 Many microorganisms swim through gels, materials with nonzero zero-frequency elastic shear modulus, such as mucus. Biological gels are typically heterogeneous, containing both a structural scaffold (network) and a fluid solvent. We analyze the swimming of an infinite sheet undergoing transverse traveling wave deformations in the "two-fluid" model of a ...
Vivek B. Shenoy +2 more
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Lagrangian controllability at low Reynolds number [PDF]
ESAIM: Control, Optimisation and Calculus of Variations, 2016 In this paper, we establish a result of Lagrangian controllability for a fluid at low Reynolds number, driven by the stationary Stokes equation. This amounts to the possibility of displacing a part of a fluid from one zone to another by suitably using a boundary control.
Glass, Olivier, Horsin, Thierry
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Decay of Turbulence at High Reynolds Numbers [PDF]
Physical Review Letters, 2015 Turbulent motions in a fluid decay at a certain rate once stirring has stopped. The role of the most basic parameter in fluid mechanics, the Reynolds number, in setting the decay rate is not generally known. This Letter concerns the high-Reynolds-number limit of the process. In a classical grid-turbulence wind-tunnel experiment that both reaches higher
Michael Sinhuber +2 more
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Towards the definition of a benchmark for low Reynolds number propeller aeroacoustics
Journal of Physics: Conference Series, 2021 Experimental and numerical results of a propeller of 0.3 m diameter operated in quiescent standard ambient conditions at 5000 RPM and axial velocity ranging from 0 to 20 m/s and advance ratio ranging from 0 to 0.8 are presented as a preliminary step ...
D. Casalino +4 more
semanticscholar +1 more source
A squirmer across Reynolds numbers [PDF]
Journal of Fluid Mechanics, 2016 The self-propulsion of a spherical squirmer – a model swimming organism that achieves locomotion via steady tangential movement of its surface – is quantified across the transition from viscously to inertially dominated flow. Specifically, the flow around a squirmer is computed for Reynolds numbers ($Re$) between 0.01 and 1000 by numerical solution of ...
Chisholm, Nicholas G. +3 more
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Energies, 2022 This numerical study investigated the flow-induced vibration (FIV) on non-heated and heated cylinders with different normalized corner radii (r*) at different Reynolds numbers (Re).
Yuvraj Sarout +3 more
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Spectral analysis of the budget equation in turbulent channel flows at high Reynolds number [PDF]
Journal of Fluid Mechanics, 2018 The transport equations for the variances of the velocity components are investigated using data from direct numerical simulations of incompressible channel flows at friction Reynolds number ( $Re_{\unicode[STIX]{x1D70F}}$ ) up to $Re_{\unicode[STIX ...
Myoungkyu Lee, R. Moser
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Vortex-induced vibration of cylinder under sub-critical Reynolds number
Zhongguo Jianchuan Yanjiu, 2022 ObjectiveIn order to achieve the accurate prediction of the amplitude response of a vortex-induced vibrating cylinder under the sub-critical Reynolds number, a method for establishing a Cl-A/D (lift coefficient-amplitude ratio)model of the forced ...
Li ZHOU +3 more
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