Generation and characterization of absolute equilibrium of compressible flows

Giorgio Krstulovic*, Carlos Cartes, Marc Brachet, Enrique Tirapegui

*Autor correspondiente de este trabajo

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

9 Citas (Scopus)

Resumen

A short review is given of recent papers on the relaxation to (incompressible) absolute equilibrium. A new algorithm to construct absolute equilibrium of spectrally truncated compressible flows is described. The algorithm uses stochastic processes based on the Clebsch representation of the velocity field to generate density and velocity fields that follow by construction the absolute equilibrium stationary probability. The new method is shown to reproduce the well-known Gaussian results in the incompressible limit. The irrotational compressible absolute equilibrium case is characterized and the distribution is shown to be non-Gaussian. The high-temperature compressible spectra are found not to obey k2 scaling. Finally, oscillating behavior in constant-pressure variable-temperature relaxation is obtained, suggesting the presence of second sound.

Idioma originalInglés
Páginas (desde-hasta)3445-3459
Número de páginas15
PublicaciónInternational Journal of Bifurcation and Chaos in Applied Sciences and Engineering
Volumen19
N.º10
DOI
EstadoPublicada - oct. 2009
Publicado de forma externa

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