Results 11 to 20 of about 33,912 (215)
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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Design of an accessible turbulence chamber for laboratory experiments [PDF]
HardwareXHomogeneous isotropic turbulence (HIT) chambers provide a valuable platform for experimentally studying turbulence across a wide range of systems. Existing designs are often characterized by high cost, complex fabrication requirements, and reliance on ...
Madeline E. Federle +3 more
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On Grid-Generated Quantum Turbulence [PDF]
EntropyNearly homogeneous and isotropic turbulence, generated in flows through grids of various forms in wind tunnels or by towing or oscillating grids in stationary samples of classical viscous fluids and the superfluid phases of helium, have played an ...
Ladislav Skrbek
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Radiation statistics in homogeneous isotropic turbulence [PDF]
New Journal of Physics, 2009 An analysis of turbulence?radiation interaction (TRI) in statistically stationary (forced) homogeneous and isotropic turbulence is presented. A direct numerical simulation code was used to generate instantaneous turbulent scalar fields, and the radiative transfer equation?(RTE) was solved to provide statistical data relevant in TRI.
da Silva, Carlos +2 more
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High-fidelity database of supercritical homogeneous isotropic turbulence in the pseudo-boiling region [PDF]
Scientific DataSupercritical fluids operate above their critical point and are characterized by strong nonlinearities in the equation of state, highly non-ideal fluid behavior, and a tight coupling between thermodynamics and transport properties.
David Martín, Lluís Jofre
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Lagrangian cascade in three-dimensional homogeneous and isotropic turbulence [PDF]
Journal of Fluid Mechanics, 2014 AbstractIn this work, the scaling statistics of the dissipation along Lagrangian trajectories are investigated by using fluid tracer particles obtained from a high-resolution direct numerical simulation with $\mathit{Re}_{\lambda }=400$. Both the energy dissipation rate $\epsilon $ and the local time-averaged $\epsilon _{\tau }$ agree rather well with ...
Huang, Yongxiang, Schmitt, François G
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The Spatial Structure of Passively Simulated Atmospheric Boundary Layer Turbulence
Applied Sciences, 2021 Three types of turbulence fields were investigated using a research method combining wind tunnel tests and theoretical analysis to further explore the spatial structure of atmospheric boundary layer turbulence, which was passively simulated by a wind ...
Jiadong Zeng +3 more
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Developing homogeneous isotropic turbulence [PDF]
Physica D: Nonlinear Phenomena, 2012 We investigate the self-similar evolution of the transient energy spectrum which precedes the establishment of the Kolmogorov spectrum in homogeneous isotropic turbulence in three dimensions using the EDQNM closure model. The transient evolution exhibits self-similarity of the second kind and has a non-trivial dynamical scaling exponent which results ...
Bos, Wouter J. T. +2 more
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Liutex-Represented Vortex Spectrum in Turbulence
Entropy, 2022 The Liutex vector is new quantity introduced to represent the rigid-body rotation part of fluid motion and thus to define and identify vortices in various flows. In this work, the intermittency and power-law similarity of the Liutex vector in homogeneous,
Bowen Yan, Yiqian Wang, Chaoqun Liu
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Effects of hydrogen addition and turbulence on ignition and meso-scale flames of propane mixtures
Journal of Thermal Science and Technology, 2022 This study has investigated experimentally the effects of hydrogen addition and turbulence on the ignition and the flame-kernel development characteristics in isotropic and homogeneous turbulence for propane mixtures.
Masaya NAKAHARA +4 more
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