Record details

Title
    Convection in rotating non-uniformly stratified spherical fluid shells: a systematic parameter study
Author
    Hejda, Pavel
    Jankovičová, Dana
    Šimkanin, Ján
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Contributions to Geophysics & Geodesy
Vol./nr.
    Roč. 39, č. 3
Pages
    s. 207-220
Year
    2009
Notes
    Projekt: IAA300120704, GA AV ČR3cav_un_auth*0228938
    Rozsah: 14 s.
    Výzkumný záměr: CEZ:AV0Z30120515
    Výzkumný záměr: CEZ:AV0Z30420517
Subject category
    control volume method
    multilayer convection
    non-uniform stratification
    rotating convection
Keyword
    Convection
    Fluid
    Non-uniformly
    Parameter
    Rotating
    Shells
    Spherical
    Stratified
    Study
    Systematic
Abstract (in english)
   A systematic parameter study of rotating convection in non-uniformly stratified spherical shells in dependence on the Prandtl number, Ekman number and Rayleigh number is presented. Attention is focused on the case, in which the thickness of both sublayers (stable and unstable) is the same (which was not investigated before). In our case the convection is not suppressed in the stably stratified region but, it is developed in both sublayers. Cases of small and large Prandtl numbers are characterized by the creation of multilayer convective structures. Convective motions take place simultaneously in the stable and unstable layers and form a multilayer structure. On the other hand, it is not possible to observe any multilayer convection for Prandtl number equal to one but it is possible to observe the small-scale structures. A conclusion is that our case is similar to the case in which the thickness of unstable sublayer is greater than that of stable one.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013