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Title: Langevin approach to generate synthetic turbulent flows
Author: Martí Pérez, Arturo C.
Sagués i Mestre, Francesc
Sancho, José M.
Sancho, José M.
Keywords: Mecànica de fluids
Fluid mechanics
Issue Date: Apr-1997
Publisher: American Institute of Physics
Abstract: We present an analytical scheme, easily implemented numerically, to generate synthetic Gaussian turbulent flows by using a linear Langevin equation, where the noise term acts as a stochastic stirring force. The characteristic parameters of the velocity field are well introduced, in particular the kinematic viscosity and the spectrum of energy. As an application, the diffusion of a passive scalar is studied for two different energy spectra. Numerical results are compared favorably with analytical calculations.
Note: Reproducció del document publicat a:
It is part of: Physics of Fluids, 1997, vol. 9, num. 4, p. 1078-1084
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ISSN: 0021-8979
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Ciència dels Materials i Química Física)

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