Systematic bias in the calculation of spectral density from a three-dimensional spatial grid - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2014

Systematic bias in the calculation of spectral density from a three-dimensional spatial grid

Résumé

The energy spectral density E(k), where k is the spatial wave number, is a well-known diagnostic of homogeneous turbulence and magnetohydrodynamic turbulence. However, in most of the curves plotted by different authors, some systematic kinks can be observed at k=9, 15, and 19. We claim that these kinks have no physical meaning and are in fact the signature of the method that is used to estimate E(k) from a three-dimensional spatial grid. In this paper we give another method in order to get rid of the spurious kinks and to estimate E(k) much more accurately.
Fichier principal
Vignette du fichier
stepanov2014.pdf (226.15 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-01107659 , version 1 (04-05-2022)

Identifiants

Citer

Rodion Stepanov, Franck Plunian, Mouloud Kessar, Guillaume Balarac. Systematic bias in the calculation of spectral density from a three-dimensional spatial grid. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2014, pp.053309. ⟨10.1103/PhysRevE.90.053309⟩. ⟨hal-01107659⟩
172 Consultations
16 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More