Journal ArticleDOI
Expanded analogy between Boltzmann kinetic theory of fluids and turbulence
TLDR
In this article, the effects of turbulent fluctuations have a striking resemblance to those of microscale (thermal) fluctuations in laminar flows, even to higher order in the Knudsen number.Abstract:
We demonstrate that the effects of turbulent fluctuations have a striking resemblance to those of microscale (thermal) fluctuations in laminar flows, even to higher order in the Knudsen number. This suggests that there may be a good basis for understanding turbulence in terms of Boltzmann kinetic theory. If so, turbulence may be better described in terms of ‘mixing times’ rather than the more classical ‘mixing lengths’. Comparisons are made to Reynolds-stress turbulence models.read more
Citations
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Proceedings ArticleDOI
HVAC noise predictions using a Lattice Boltzmann Method
Franck Perot,Mohammed Meskine,Vincent LeGoff,Vincent Vidal,Frederic Gille,Sandrine Vergne,Frederic Dupuy +6 more
TL;DR: In this paper, the effect of the pseudo-noise contribution at the virtual microphones is investigated using an acoustic analogy based on the resolution of the Ffowcs-Williams and Hawkings equation.
Journal ArticleDOI
High-order gas-kinetic scheme for large eddy simulation of turbulent channel flows
Journal ArticleDOI
Predicting high-speed feedback mechanisms in rectangular cavities using lattice-Boltzmann very-large eddy simulations
TL;DR: In this paper, a scale-resolving transonic lattice Boltzmann flow simulation was used to predict the effects of free stream velocity and length-to-depth ratio on the development of Rossiter modes inside the cavity.
Proceedings ArticleDOI
Lattice-Boltzmann Calculations of Rotor Aeroacoustics in Transitional Boundary Layer Regime
TL;DR: In this article , a 2-bladed propeller of 0.3 m diameter is considered, which is operated at 4000 and 5000 RPM and two different advance ratios, 0.0 and 0.6, for each angular velocity.
References
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Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Book
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Journal ArticleDOI
Development of turbulence models for shear flows by a double expansion technique
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Journal ArticleDOI
The Mathematical Theory of Non-Uniform Gases
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