Dynamics of convection and dynamos in rotating spherical fluid shells
Dynamics of convection and dynamos in rotating spherical fluid shells
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DOI：
10.1016/s0169-5983(01)00004-1
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发表时间：
2000-11
影响因子：
1.5
通讯作者：
E. Grote;F. Busse
中科院分区：
文献类型：
--
作者：
E. Grote;F. Busse
对快速旋转的球形流体壳进行了有磁场和无磁场的热对流数值模拟。松弛振荡和局域对流活动代表了在没有磁场的情况下湍流对流的相干现象。在后者的存在下，相干结构被破坏，热传递增强。随着瑞利数的增加，磁能趋于饱和，磁场呈丝状结构。
Numerical simulations of thermal convection in rapidly rotating spherical fluid shells have been carried out with and without magnetic fields generated by the dynamo process. Relaxation oscillations and localized convection activity represent coherent phenomena of turbulent convection in the absence of magnetic fields. In the presence of the latter, the coherent structures are destroyed and the heat transport is enhanced. With increasing Rayleigh number the magnetic energy tends to saturate and the magnetic field assumes an increasingly filamentary structure.