Title:
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Langevin approach to generate synthetic turbulent flows
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Author:
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Martí Pérez, Arturo C.; Sagués i Mestre, Francesc; Sancho, José M.; Sancho, José M.
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Mecànica de fluids -Turbulència -Hidrodinàmica -Fluid mechanics -Dynamics -Turbulence |
Rights:
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(c) American Institute of Physics, 1997
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Document type:
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Article Article - Published version |
Published by:
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American Institute of Physics
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