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Computers and turbulence [PDF]
European Journal of Mechanics - B/Fluids, 2020 This paper briefly reviews the influence that the rapid evolution of computer power in the last decades has had on turbulence research. It is argued that it can be divided into three stages. In the earliest (`heroic') one, simulations were expensive and could at most be considered as substitutes for experiments. Later, as computers grew faster and some
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Journal of Fluid Mechanics, 2017 In this paper, we address the problem of how to account for second-order statistics of turbulent flows using low-complexity stochastic dynamical models based on the linearized Navier–Stokes equations. The complexity is quantified by the number of degrees of freedom in the linearized evolution model that are directly influenced by stochastic excitation ...
Armin Zare +2 more
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LightCUD: a program for diagnosing IBD based on human gut microbiome data
BioData Mining, 2021 Background The diagnosis of inflammatory bowel disease (IBD) and discrimination between the types of IBD are clinically important. IBD is associated with marked changes in the intestinal microbiota. Advances in next-generation sequencing (NGS) technology
Congmin Xu +5 more
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Statistical Properties of Turbulence: An Overview [PDF]
, 2009 We present an introductory overview of several challenging problems in the statistical characterisation of turbulence. We provide examples from fluid turbulence in three and two dimensions, from the turbulent advection of passive scalars, turbulence in ...
A. Aharony +141 more
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Inverse design of mesoscopic models for compressible flow using the Chapman-Enskog analysis
Advances in Aerodynamics, 2021 In this paper, based on simplified Boltzmann equation, we explore the inverse-design of mesoscopic models for compressible flow using the Chapman-Enskog analysis. Starting from the single-relaxation-time Boltzmann equation with an additional source term,
Tao Chen +3 more
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Fluids, 2023 This paper addresses one of the major obstacles arising in the high-fidelity scale-resolving simulations of turbulent flows inside ducts with the walls covered by acoustic liners in order to attenuate the sound radiated from the duct.
Mikhail Shur +2 more
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Turbulence and fossil turbulence in oceans and lakes [PDF]
Chinese Journal of Oceanology and Limnology, 2004 Turbulence is defined as an eddy-like state of fluid motion where the inertial-vortex forces of the eddies are larger than any of the other forces that tend to damp the eddies out. Energy cascades of irrotational flows from large scales to small are non-turbulent, even if they supply energy to turbulence. Turbulent flows are rotational and cascade from
Pak Tao Leung, Carl H. Gibson
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Aerodynamic generation of electric fields in turbulence laden with charged inertial particles
Nature Communications, 2018 How lightning occurs in dusty atmospheres remains largely unknown because of the complexity of the turbulent flows involved. Di Renzo and Urzay reveal a flow-driven mechanism of charge separation by simulating turbulence laden with hundreds of millions ...
M. Di Renzo, J. Urzay
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Criteria of tracking vortex surfaces in turbulent-like flows
Advances in Aerodynamics, 2022 We propose criteria of tracking vortex surfaces in complex flows based on the vortex-surface field (VSF). The criteria characterize the accuracy and Lagrangian tracking performance of the numerical VSF solution, and determine the time period when the ...
Zishuo Han, Yue Yang
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