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The three-dimensional numerical aerodynamics of a movable block burner
(Brazilian Soc Chemical EngSao PauloBrasil, 2003)
Passive scalar cascades in rotating helical and non-helical flows
(IOP Publishing, 2013-07)
We study how helicity affects the spectrum of a passive scalar in rotating turbulent flows, using numerical simulations of turbulent flows with or without rotation and with or without injection of helicity. Scaling laws ...
Sign cancellation and scaling in the vertical component of velocity and vorticity in rotating turbulence
(Amer Physical Soc, 2013-07-18)
We study sign changes and scaling laws in the Cartesian components of
the velocity and vorticity of rotating turbulence, in the helicity, and
in the components of vertically averaged fields. Data for the analysis
are ...
Effective diffusivity of passive scalars in rotating turbulence
(Amer Physical Soc, 2013-02-25)
We use direct numerical simulations to compute turbulent transport
coefficients for passive scalars in turbulent rotating flows. Effective
diffusion coefficients in the directions parallel and perpendicular to
the ...
Large-scale behavior and statistical equilibria in rotating flows
(American Physical Society, 2011-01)
We examine long-time properties of the ideal dynamics of three-dimensional flows, in the presence or not of an imposed solid-body rotation and with or without helicity (velocity-vorticity correlation). In all cases, the ...
Rotating helical turbulence. II. Intermittencyscale invarianceand structures
(American Institute of Physics, 2010-03)
We study the intermittency properties of the energy and helicity cascades in two 15363 direct numerical simulations of helical rotating turbulence. Symmetric and antisymmetric velocity increments are examinedas well as ...
Thermal design exploration of a swirl flow microchannel heat sink for high heat flux applications based on numerical simulations
(Pergamon-Elsevier Science, 2016)
Numerical simulations of velocity and temperature fields to explore the design of a single phase microchannel cooling system with spiraling radial inflow for high heat flux applications are presented. Total pressure drop ...
Inverse cascades in turbulence and the case of rotating flows
(IOP Publishing, 2013-07-16)
We first summarize briefly several properties concerning the dynamics of two-dimensional (2D) turbulence, with an emphasis on the inverse cascade of energy to the largest accessible scale of the system. In order to study ...
Spectral modeling of rotating turbulent flows
(American Institute of Physics, 2010-02)
A subgrid-scale spectral model of rotating turbulent flows is tested against direct numerical simulations (DNSs). The case of Taylor-Green forcing is considered, a configuration that mimics the flow between two counter-rotating ...
Quantification of the strength of inertial waves in a rotating turbulent flow
(American Institute of Physics, 2014-03)
We quantify the strength of the waves and their impact on the energy cascade in rotating turbulence by studying the wave number and frequency energy spectrum, and the time correlation functions of individual Fourier modes ...