Results 11 to 20 of about 5,296 (266)
von Kármán-Howarth and Corrsin equations closures through Liouville theorem
Results in Physics, 2020 In this communication, the closure formulas of von Kármán-Howarth and Corrsin equations are obtained through the Liouville theorem and the hypothesis of homogeneous isotropic incompressible turbulence.
Nicola de Divitiis
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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, G, Musacchio, Stefano
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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
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Dispersion of Air Bubbles in Isotropic Turbulence [PDF]
Physical Review Letters, 2018 Physical Review Letters (accepted), 6 pages, 4 figures, 1 ...
Mathai, Varghese +4 more
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Chaotic Properties of a Turbulent Isotropic Fluid [PDF]
Physical Review Letters, 2018 8 pages, 8 ...
Berera, A., Ho, R. D. J. G.
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AIP Advances, 2015 A necessary and sufficient form of two-point velocity characteristic function to embody two-point velocity distribution in turbulence is constructed on the mathematical basis of homogeneity and isotropy.
Iwao Hosokawa
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Spectrum of Reynolds stress for anisotropic turbulence and Taylor expansion of small-scale velocity [PDF]
EPJ Web of ConferencesSolution of the small-scale velocity transport equation for incompressible fluid in anisotropic turbulence as Taylor series in time is used for obtaining of explicit expression for the Reynolds Stress spectra.
Balonishnikov Alexander
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Energy Transfer in Isotropic Turbulence [PDF]
The Physics of Fluids, 1963 Energy transfer from large to small eddies at three stations in turbulence behind a square mesh is determined by measuring the rates of change and viscous dissipation of the spectrum and the results are compared with a theoretical prediction. Large eddies for which viscous dissipation is negligible satisfy a similarity relation which agrees with the ...
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Advances in Mathematical Physics, 2015 This study investigates the anisotropic characteristics of turbulent energy dissipation rate in a rotating jet flow via direct numerical simulation. The turbulent energy dissipation tensor, including its eigenvalues in the swirling flows with different ...
Xingtuan Yang +5 more
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Energies, 2019 The Reynolds-averaged Navier−Stokes (RANS)-based generalized actuator disc method along with the Reynolds stress model (AD/RANS_RSM) is assessed for wind turbine wake simulation.
Linlin Tian +4 more
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