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A numerical study on turbulent heat transfer in convective envelopes
Author(s) -
Arlt K.,
Rüdiger G.
Publication year - 1984
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113050505
Subject(s) - physics , convection , mechanics , heat flux , equator , turbulence , heat transfer , classical mechanics , atmospheric sciences , latitude , astronomy
Via a two‐dimensional temperature equation we numerically attack the well‐known solar heat flux problem. A spherically symmetric heat flux may enter the convection zone at its bottom and leave in accord to the Stefan‐Boltzmann law. Meridional circulation is involved, radiation is still ignored. In order to establish the eddy conductivity tensor for the simplest rotating turbulences a second‐order correlation approximation is used. The resulting pole‐equator differences vary for various profiles of eddy conductivity and turnover time. They prove to be small only for small stratification or strong outward decrease of turnover time. The fact that we do not observe any latitudinally profiled mean temperature might thus have to do with the real outward drop of the rotational influence on convection.