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Langevin approach to generate synthetic turbulent flows
Martí Pérez, Arturo C.; Sagués i Mestre, Francesc; Sancho, José M.; Sancho, José M.
Universitat de Barcelona
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.
2012-05-03
Mecànica de fluids
Turbulència
Hidrodinàmica
Fluid mechanics
Dynamics
Turbulence
(c) American Institute of Physics, 1997
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Article - Published version
American Institute of Physics
         

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