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Theoretical and Applied Mechanics 2006, vol. 33, br. 4, str. 259-280
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Trenje na zidu pri nestacionarnoj slobodnoj konvekciji između dve grejane vertikalne paralelne ploče
SažetakPosmatra se nestacionarna viskozna nestišljiva konvekcija elektroprovodnog fluida u prisustvu magnetnog polja upravnog na ravan tečenja. Indukovano polje duž linija kretanja varira poprečno na ravan tečenja, a temperatura fluida se menja tokom vremena. Dobijena su analitička rešenja za brzinu, indukovano polje i raspored temperature za male i velike magnetne Rejnoldsove brojeve. Dobijeno je trenje na zidovima dve ploče. Distribucija brzine, indukovano polje i trenje na zidu su prikazani u funkciji rastojanja od plovca. Uočeno je da porast magnetnog Rejnoldsovog broja, Rm, pri konstantnom Hartmanovom broju, M, vodi ka postepenom porastu trenja na zidu. Međutim, porast M, pri konstantnom Rm, dovodi do smanjenja trenja na zidu.
Ključne rečiskin-friction; fully developed flow; conducting fluid; induced field; magnetic Reynolds number
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