Patterns in spherical Rayleigh-Bénard convection: a giant spiral roll and its dislocations.
Patterns in spherical Rayleigh-Bénard convection: a giant spiral roll and its dislocations.
复制标题
球形瑞利-贝纳德对流的模式：巨大的螺旋滚动及其位错。
DOI：
10.1103/physreve.66.055203
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Keke Zhang
中科院分区：
文献类型：
--
作者：
Pu Zhang;X. Liao;Keke Zhang
通过全三维数值模拟研究了球对称重力作用下中薄球形流体层中的热对流，即球形Rayleigh-Bénard对流。在对流开始附近，发现了一个稳定的球形图案，其形式为一个巨大的螺旋辊覆盖整个球面，没有缺陷。在较大的瑞利数下也发现了巨螺旋辊的连续位错。
Thermal convection in a moderately thin spherical fluid layer in the presence of spherically symmetric gravity, spherical Rayleigh-Bénard convection, is investigated through fully three-dimensional numerical simulations. A steady spherical pattern in the form of a single giant spiral roll covering the whole spherical surface without defects is discovered near the onset of convection. Successive dislocations of the giant spiral roll are also found at larger Rayleigh numbers.