Počet záznamů: 1

Convection in rotating non-uniformly stratified spherical fluid shells in dependence on Ekman and Prandtl numbers

  1. 1.
    0336377 - GFU-E 2010 RIV NL eng J - Článek v odborném periodiku
    Šimkanin, Ján - Hejda, Pavel - Saxonbergová-Jankovičová, Dana
    Convection in rotating non-uniformly stratified spherical fluid shells in dependence on Ekman and Prandtl numbers.
    Physics of the Earth and Planetary Interiors. Roč. 178, č. 3-4 (2010), s. 39-47 ISSN 0031-9201
    Grant CEP: GA AV ČR IAA300120704
    Výzkumný záměr: CEZ:AV0Z30120515; CEZ:AV0Z30420517
    Klíčová slova: rotating convection * non-uniform stratification * penetrative convection * small-scale structures
    Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie
    Impakt faktor: 2.640, rok: 2010

    We present an investigation of rotating convection in non-uniformly stratified spherical shells in dependence on Prandtl, Ekman and Rayleigh numbers. Attention is focused on the case in which the thickness of both sublayers (stable and unstable) is identical, which was not investigated before. Influence of stratification is more evident at small values of Rayleigh numbers (large values of Ekman numbers), at large Rayleigh numbers is almost negligible. For small Rayleigh numbers in the case of uniform stratification a large-scale columnar convection is developed in the whole volume, in the case of non-uniform stratification it is suppressed to the unstably stratified region but slightly penetrates to the stably stratified one, except the case of large Prandtl numbers when the convection significantly penetrate to the stably stratified region.
    Trvalý link: http://hdl.handle.net/11104/0180621