Journal ArticleDOI
Computing Three-Dimensional Incompressible Flows with Vortex Elements
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TLDR
In this article, the techniques, capabilities and applicability of numerical models of three-dimensional, unsteady vortical flows with high Re are assessed, along with Lagrangian vortex elements, which may be of use in modelling the rotational part of flows around bluff bodies, nonuniform density flows and chemically reacting flows.Abstract:
The techniques, capabilities and applicability of numerical models of three-dimensional, unsteady vortical flows with high Re are assessed. Vorticity is calculated only in appropriate regions and the velocity field is derived from the boundary conditions. Vorticity is assumed to take the shape of tubes with uniform core structures in the case of turbulence. The efforts being made to simplify equations for dense collections of vortex filaments in order to make them tractable to computer simulations are described. The effectiveness of vorticity arrow representations for accurately describing vorticity fields near surfaces is discussed, along with Lagrangian vortex elements, which may be of use in modelling the rotational part of flows around bluff bodies, nonuniform density flows and chemically reacting flows.read more
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Wavelet Transforms and their Applications to Turbulence
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Meshfree and particle methods and their applications
Shaofan Li,Wing Kam Liu +1 more
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Numerical models for two-phase turbulent flows
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Journal ArticleDOI
Computational aeroacoustics: progress on nonlinear problems of sound generation
Tim Colonius,Sanjiva K. Lele +1 more
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Journal ArticleDOI
The natural and forced formation of spot-like vortex dislocations in the transition of a wake
TL;DR: In this article, it was shown that vortex dislocations are stable in a symmetric in-phase configuration, and that they induce quasi-periodic velocity spectra and (beat) dislocation-frequency oscillations in the near wake.