Stochastic generation of homogeneous isotropic turbulence with well-defined-spectra
A precise and simple computational model to generate well-behaved two-dimensional turbulent flows is presented. The whole approach rests on the use of stochastic differential equations and is general enough to reproduce a variety of energy spectra and spatiotemporal correlation functions. Analytical...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1993 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/18716 |
| Acesso em linha: | https://hdl.handle.net/2445/18716 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física matemàtica Física estadística Termodinàmica Sistemes dinàmics diferenciables Dinàmica de fluids Mathematical physics Statistical physics Thermodynamics Differentiable dynamical systems Fluid dynamics |
| Resumo: | A precise and simple computational model to generate well-behaved two-dimensional turbulent flows is presented. The whole approach rests on the use of stochastic differential equations and is general enough to reproduce a variety of energy spectra and spatiotemporal correlation functions. Analytical expressions for both the continuous and the discrete versions, together with simulation algorithms, are derived. Results for two relevant spectra, covering distinct ranges of wave numbers, are given. |
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