Results 11 to 20 of about 2,983 (87)

Extended Self Similarity works for the Burgers equation and why [PDF]

open access: yes, 2009
Extended Self-Similarity (ESS), a procedure that remarkably extends the range of scaling for structure functions in Navier--Stokes turbulence and thus allows improved determination of intermittency exponents, has never been fully explained.
Frisch   +5 more
core   +3 more sources

Scale Dependence of Multiplier Distributions for Particle Concentration, Enstrophy and Dissipation in the Inertial Range of Homogeneous Turbulence

open access: yes, 2017
Turbulent flows preferentially concentrate inertial particles depending on their stopping time or Stokes number, which can lead to significant spatial variations in the particle concentration.
Cuzzi, Jeffrey N.   +2 more
core   +1 more source

Global well-posedness for passively transported nonlinear moisture dynamics with phase changes [PDF]

open access: yes, 2016
We study a moisture model for warm clouds that has been used by Klein and Majda (2006 Theor. Comput. Fluid Dyn. 20 525–551) as a basis for multiscale asymptotic expansions for deep convective phenomena.
S. Hittmeir   +3 more
semanticscholar   +1 more source

Competing Fluid Forces Control Endothelial Sprouting in a 3-D Microfluidic Vessel Bifurcation Model

open access: yesbioRxiv, 2019
Sprouting angiogenesis, the infiltration and extension of endothelial cells from pre-existing blood vessels, helps orchestrate vascular growth and remodeling.
E. Akbari   +4 more
semanticscholar   +1 more source

Phase-space Lagrangian dynamics of incompressible thermofluids

open access: yes, 2009
Phase-space Lagrangian dynamics in ideal fluids (i.e, continua) is usually related to the so-called {\it ideal tracer particles}. The latter, which can in principle be permitted to have arbitrary initial velocities, are understood as particles of ...
Cremaschini, Claudio   +2 more
core   +1 more source

Lagrangian Refined Kolmogorov Similarity Hypothesis for Gradient Time-evolution in Turbulent Flows

open access: yes, 2009
We study the time evolution of velocity and pressure gradients in isotropic turbulence, by quantifying their decorrelation time scales as one follows fluid particles in the flow.
A. N. Kolmogorov   +3 more
core   +1 more source

The small-scale dynamo: Breaking universality at high Mach numbers

open access: yes, 2013
(Abridged) The small-scale dynamo may play a substantial role in magnetizing the Universe under a large range of conditions, including subsonic turbulence at low Mach numbers, highly supersonic turbulence at high Mach numbers and a large range of ...
Bovino, Stefano   +4 more
core   +1 more source

Dynamics and symmetries of flow reversals in turbulent convection

open access: yes, 2011
Based on direct numerical simulations and symmetry arguments, we show that the large-scale Fourier modes are useful tools to describe the flow structures and dynamics of flow reversals in Rayleigh-B\'enard convection (RBC).
Chandra, Mani, Verma, Mahendra K.
core   +1 more source

Large Scale Structures a Gradient Lines: the case of the Trkal Flow

open access: yes, 2010
A specific asymptotic expansion at large Reynolds numbers (R)for the long wavelength perturbation of a non stationary anisotropic helical solution of the force less Navier-Stokes equations (Trkal solutions) is effectively constructed of the Beltrami type
A. Libin   +24 more
core   +1 more source

Low Rossby limiting dynamics for stably stratified flow with finite Froude number [PDF]

open access: yesJournal of Fluid Mechanics, 2011
In this paper, we explore the strong rotation limit of the rotating and stratified Boussinesq equations with periodic boundary conditions when the stratification is order 1 ([Rossby number] Ro = ε, [Froude number] Fr = O(1), as ε → 0).
B. Wingate   +3 more
semanticscholar   +1 more source

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