On the influence of gravity in the dynamics of geophysical flows - Archive ouverte HAL
Article Dans Une Revue Mathematics in Engineering Année : 2023

On the influence of gravity in the dynamics of geophysical flows

Résumé

In the present paper, we study a multiscale limit for the barotropic Navier-Stokes system with Coriolis and gravitational forces, for vanishing values of the Mach, Rossby and Froude numbers ($\rm Ma$, $\rm Ro$ and $\rm Fr$, respectively). The focus here is on the effects of gravity: albeit remaining in a low stratification regime ${\rm Ma}/{\rm Fr}\,\rightarrow\,0$, we consider scaling for the Froude number which go beyond the "critical" value $\rm Fr\,=\,\sqrt{\rm Ma}$. The rigorous derivation of suitable limiting systems for the various choices of the scaling is shown by means of a compensated compactness argument. Exploiting the precise structure of the gravitational force is the key to get the convergence.
Fichier principal
Vignette du fichier
DS-F-S-WK_gravity.pdf (488.4 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03352242 , version 1 (23-09-2021)

Identifiants

Citer

Daniele del Santo, Francesco Fanelli, Gabriele Sbaiz, Aneta Wróblewska-Kamińska. On the influence of gravity in the dynamics of geophysical flows. Mathematics in Engineering, 2023, 5 (1), pp.1-33. ⟨10.3934/mine.2023008⟩. ⟨hal-03352242⟩
191 Consultations
54 Téléchargements

Altmetric

Partager

More