Kinetic energy cascades in quasi-geostrophic convection in a spherical shell

0379737 - GFÚ 2013 RIV GB eng J - Článek v odborném periodiku
Reshetnyak, M. - Hejda, Pavel
Kinetic energy cascades in quasi-geostrophic convection in a spherical shell.
Physica Scripta. Roč. 86, č. 1 (2012), 018408/1-018408/5. ISSN 0031-8949. E-ISSN 1402-4896
Výzkumný záměr: CEZ:AV0Z30120515
Klíčová slova: magnetohydrodynamic turbulence * magnetic fields * dynamos
Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie
Impakt faktor: 1.032, rok: 2012

We consider triadic nonlinear interaction in the Navier-Stokes equation for quasi-geostrophic convection in a spherical shell. This approach helps us understand the origin of kinetic energy transport in the system and the particular scheme of mode interaction, as well as the locality of energy transfer. The peculiarity of convection in the sphere, concerned with the excitation of Rossby waves, is considered. The obtained results are compared with the results of our previous study on Cartesian geometry.
Trvalý link: http://hdl.handle.net/11104/0210622