Langevin approach to generate synthetic turbulence

Preprint

25 March 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.chao-dyn/9703015

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.

Keywords

IMPLEMENTED NUMERICALLY
SYNTHETIC TURBULENCE
GENERATE SYNTHETIC
ANALYTICAL SCHEME
LANGEVIN APPROACH
STOCHASTIC
TURBULENT
PASSIVE

All Related Versions

Version 1, 1997-03-25, ArXiv
Published version: Physics of Fluids, 9 (4), 1078.

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