Results 21 to 30 of about 1,125 (192)
Fluctuation-induced force in homogeneous isotropic turbulence [PDF]
Science Advances, 2020 We find an analog to the quantum Casimir effect in a turbulent fluid.
Spandan, Vamsi +3 more
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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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Helicity statistics in homogeneous and isotropic turbulence and turbulence models [PDF]
Physical Review Fluids, 2017 We study the statistical properties of helicity in direct numerical simulations of fully developed homogeneous and isotropic turbulence and in a class of turbulence shell models. We consider correlation functions based on combinations of vorticity and velocity increments that are not invariant under mirror symmetry. We also study the scaling properties
Ganapati Sahoo +2 more
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Study of Colliding Particle-Pair Velocity Correlation in Homogeneous Isotropic Turbulence
Applied Sciences, 2020 This paper deals with the numerical analysis of the particle inertia and volume fraction effects on colliding particle-pair velocity correlation immersed in an unsteady isotropic homogeneous turbulent flow.
Santiago Lain +2 more
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Cloud droplet diffusional growth in homogeneous isotropic turbulence: bin microphysics versus Lagrangian super-droplet simulations [PDF]
Atmospheric Chemistry and Physics, 2021 The increase in the spectral width of an initially monodisperse population of cloud droplets in homogeneous isotropic turbulence is investigated by applying a finite-difference fluid flow model combined with either Eulerian bin microphysics or a ...
W. W. Grabowski, L. Thomas, L. Thomas
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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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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
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Fluids, 2020 The second-order velocity structure function statistics have been analysed using a DNS database of statistically planar turbulent premixed flames subjected to unburned gas forcing.
Peter Brearley +3 more
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Radar cross sections for mesospheric echoes at Jicamarca [PDF]
Annales Geophysicae, 2009 Radar cross sections (RCS) of mesospheric layers at 50 MHz observed at Jicamarca, Peru, range from 10−18 to 10−16 m−1, three orders of magnitudes smaller than cross sections reported for polar mesospheric winter echoes during solar ...
G. A. Lehmacher +5 more
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Turbulent Eddy Generation for the CFD Analysis of Hydrokinetic Turbines
Journal of Marine Science and Engineering, 2022 This paper presents a novel theoretical and computational methodology for the generation of an onset turbulent field with prescribed properties in the numerical simulation of an arbitrary viscous flow.
Matteo Gregori +2 more
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