F. Mellibovsky

Publications50
h-index15
Citations641
Highly Influential Citations28
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Streamwise-localized solutions at the onset of turbulence in pipe flow.
TLDR
The discovery of periodic solutions which just like intermittent turbulence are spatially localized and it is shown that turbulent transients arise from one such solution branch.
Bone Tissue Properties Measurement by Reference Point Indentation in Glucocorticoid‐Induced Osteoporosis
TLDR
This study is the first to the authors' knowledge to demonstrate that reference point indentation is sensitive enough to reflect changes in cortical bone indentation after treatment with osteoporosis therapies in patients newly exposed to glucocorticoids.
Transition in localized pipe flow turbulence.
Direct numerical simulation of transitional pipe flow is carried out in a long computational domain in order to characterize the dynamics within the saddle region of phase space that separates…
Takens–Bogdanov bifurcation of travelling-wave solutions in pipe flow
The appearance of travelling-wave-type solutions in pipe Poiseuille flow that are disconnected from the basic parabolic profile is numerically studied in detail. We focus on solutions in the twofold…
Critical threshold in pipe flow transition
TLDR
This study provides a numerical characterization of the basin of attraction of the laminar Hagen–Poiseuille flow by measuring the minimal amplitude of a perturbation required to trigger transition by means of a computational method that numerically resolves the transitional dynamics.
A mechanism for streamwise localisation of nonlinear waves in shear flows
We present the complete unfolding of streamwise localisation in a paradigm of extended shear flows, namely two-dimensional plane Poiseuille flow. Exact solutions of the Navier–Stokes equations are…
Pipe flow transition threshold following localized impulsive perturbations
A numerical study of the destabilizing effects of localized impulsive perturbations in pressure-driven Hagen-Poiseuille or pipe flow is presented. The numerics intend to ellucidate the intrinsic…
Solenoidal spectral formulations for the computation of secondary flows in cylindrical and annular geometries
Abstract.Novel spectral methods are formulated in terms of divergence-free vector fields in order to compute finite amplitude time-dependent solutions of incompressible viscous flows in cylindrical…
Testing otter board hydrodynamic performances in wind tunnel facilities
On a solenoidal Fourier--Chebyshev spectral method for stability analysis of the Hagen--Poiseuille flow
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