Results 51 to 60 of about 60,257 (227)
Probability Density Functions in Homogeneous and Isotropic Magneto-Hydrodynamic Turbulence
Atmosphere, 2020 We derive a hierarchy of evolution equations for multi-point probability density functions in magneto-hydrodynamic (MHD) turbulence. We discuss the relation to the moment hierarchy in MHD turbulence formulated by Chandrasekhar (S. Chandrasekhar, Proc. R.
Jan Friedrich
doaj +1 more source
Fluids, 2023 Bubble columns (BCs) are widely used in the chemical industry. In many industrial applications, these important gas-liquid contactors operate in a churn-turbulent flow regime.
Stoyan Nedeltchev
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Spinodal Decomposition in Homogeneous and Isotropic Turbulence [PDF]
Physical Review Letters, 2014 We study the competition between domain coarsening in a symmetric binary mixtures below the critical temperature and turbulent fluctuations. We find that the coarsening process is arrested in presence of turbulence. The physics of the process shares remarkable similarities with the behaviour of diluted turbulent emulsions and the arrest length scale ...
Perlekar Prasad +4 more
openaire +5 more sources
BMEMat, EarlyView.A series of in vitro experiments, numerical simulations and in vivo experiments were conducted to jointly evaluate the effects of different thicknesses of bioabsorbable polymer vascular stents on their radial capacity, hemodynamics and in vivo outcomes.
Chong Chen +9 more
wiley +1 more source
On Modelling Wind-Farm Wake Turbulence Autospectra and Coherence from a Database
Energies, 2018 This study addresses the feasibility of modeling wind-farm wake-turbulence autospectra and coherences from a database: flow velocity points from experimental and computational fluid dynamics (CFD) investigations. Specifically, it first applies an earlier-
Kyle A. Schau +2 more
doaj +1 more source
On optical imaging through aircraft turbulent boundary layers [PDF]
, 1980 Optical resolution quality as affected by aircraft turbulent boundary layers is analyzed. Wind-tunnel data was analyzed to obtained the variation of boundary layer turbulence scale length and mass density rms fluctuations with Mach number.
Sutton, G. W.
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Anisotropic Spectra of Acoustic Turbulence
, 1999 We found universal anizopropic spectra of acoustic turbulence with the linear dispersion law \bbox{$\omega (k) =ck$} within the framework of generalized kinetic equation which takes into account the finite time of three-wave interactions.
L'vov, V. S, L'vov, Yu. V., Pomyalov, A.
core +1 more source
Fluctuation-Dissipation Relations and statistical temperatures in a turbulent von K\'arm\'an flow [PDF]
, 2008 We experimentally characterize the fluctuations of the non-homogeneous non-isotropic turbulence in an axisymmetric von K\'arm\'an flow. We show that these fluctuations satisfy relations analogous to classical Fluctuation-Dissipation Relations (FDRs) in ...
Arnaud Chiffaudel +8 more
core +3 more sources
Chaos and Predictability of Homogeneous-Isotropic Turbulence [PDF]
Physical Review Letters, 2017 We study the chaoticity and the predictability of a turbulent flow on the basis of high-resolution direct numerical simulations at different Reynolds numbers. We find that the Lyapunov exponent of turbulence, which measures the exponential separation of two initially close solution of the Navier-Stokes equations, grows with the Reynolds number of the ...
BOFFETTA, Guido, Musacchio, S.
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Optimization of 3D‐Printed Structured Packings—Current State and Future Developments
Chemie Ingenieur Technik, EarlyView.This paper gives an overview about structured packing development for distillation, surveying heuristic development cycles, computational fluid dynamics simulations, and additive manufacturing techniques. The emerging application of shape optimization to improve packings is emphasized, and its benefits, impact, and limitations are discussed.
Dennis Stucke +3 more
wiley +1 more source