Langevin approach to generate synthetic turbulent flows
作者:
A. C. Marti´,
J. M. Sancho,
F. Sague´s,
A. Careta,
期刊:
Physics of Fluids
(AIP Available online 1997)
卷期:
Volume 9,
issue 4
页码: 1078-1084
ISSN:1070-6631
年代: 1997
DOI:10.1063/1.869201
出版商: AIP
数据来源: AIP
摘要:
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. ©1997 American Institute of Physics.
点击下载:
PDF
(290KB)
返 回