"Numerical modelling of the geodynamo"@en . . "Vn\u011Bj\u0161\u00ED j\u00E1dro Zem\u011B, v n\u011Bm\u017E prob\u00EDh\u00E1 generace zemsk\u00E9ho magnetick\u00E9ho pole, lze rozd\u011Blit na dv\u011B podoblasti: objem j\u00E1dra, kde se magnetick\u00E9 pole i rychlosti m\u011Bn\u00ED hladce a tenk\u00E9 vrstvy (\u0159\u00E1dov\u011B metry) na hranic\u00EDch vnit\u0159n\u00ED-vn\u011Bj\u0161\u00ED j\u00E1dro a j\u00E1dro-pl\u00E1\u0161\u0165, kde doch\u00E1z\u00ED k prudk\u00FDm zm\u011Bn\u00E1m t\u011Bchto veli\u010Din. Jeliko\u017E modelov\u00E1n\u00ED dynama s p\u0159\u00EDm\u00FDm numerick\u00FDm roz\u0159e\u0161en\u00EDm vrstev je mo\u017En\u00E9 pouze za nerealistick\u00E9ho p\u0159edpokladu o tlou\u0161tce t\u011Bchto vrstev (\u0159\u00E1dov\u011B kilometry), navrh Anufriev (1994) postup, p\u0159i n\u011Bm\u017E jsou hrani\u010Dn\u00ED vrstvy \u0159e\u0161enyanalyticky a numerick\u00E1 integrace prob\u00EDh\u00E1 pouze v hlavn\u00EDm objemu vn\u011Bj\u0161\u00EDho j\u00E1dra. P\u0159edm\u011Btem navr\u017Een\u00E9ho grantu je po\u010D\u00EDta\u010Dov\u00E1 realizace tohoto postupu. Pro \u0159e\u0161en\u00ED magnetohydrodynamick\u00FDch rovnic budou vyu\u017Eity dosavadn\u00ED zku\u0161enosti s metodou s\u00EDt\u00ED, p\u0159edpokl\u00E1d\u00E1m e v\u0161ak i pou\u017Eit\u00ED metody kone\u010Dn\u00FDch element\u016F, p\u0159\u00EDpadn\u011B kone\u010Dn\u00FDch objem\u016F. Flexibilita metody s\u00EDt\u00ED bude vyu\u017Eita k modelov\u00E1n\u00ED dal\u0161\u00EDch fyzik\u00E1ln\u00EDch jev\u016F (nap\u0159. modely s turbulentn\u00ED viskozitou nebo elektromagnetickou vazbou j\u00E1dro-pl\u00E1\u0161\u0165). Projekt bude slou\u017Eit rov" . . "7"^^ . . . "Numerick\u00E9 modelov\u00E1n\u00ED zemsk\u00E9ho dynama" . "7"^^ . . . . . "In The process of generation of the magnetic field in the outer liquid core of the Earth, the region of the flow naturaly divides into two subregions : the bulk of the core where field and velocity vary relatively smoothly, and the layers (~ 1m ) on its rigid boundaries, where these quantities change abruptly. As the dynamo modelling with direct numerical resolution of the layers is possible only under the assumption of unreslistic layer thickness (several km), Anufriev (1994) proposed a method at which the layers are resolved analytically and the numerical integration is carried out only an bulk of the core. In the proposed project his method will be used for development of computer program for numerical modelling of the dynamo. The magnetohydrodynamic equations will be solved by mesh point methods and these methods will be further developed. We will use the flexibility of mesh point methods for modelling of various physical effects (e.g. models with turbulent viscosity or electromagnetic core-mantl"@en . "GA205/97/0897" . . . "http://www.isvav.cz/projectDetail.do?rowId=GA205/97/0897"^^ . . "0"^^ . . . . . "V r\u00E1mci grantov\u00E9ho projektu byly roz\u0161\u00ED\u0159eny modely zemsk\u00E9ho dynama na osov\u011B symetrick\u00E9 modely s vnit\u0159n\u00EDm j\u00E1drem v\u010Detn\u011B uv\u00E1\u017Een\u00ED rychlost\u00ED rotace vnit\u0159n\u00EDho j\u00E1dra. Sestaven\u00FD a odlad\u011Bn\u00FD program prok\u00E1zal shodu s v\u00FDpo\u010Dty jin\u00FDch autor\u016F. Byl prok\u00E1z\u00E1n zmen\u0161uj\u00EDc\u00ED s"@cs . "0"^^ . . "1"^^ .