旋转球壳中湍流对流产生的偶极发电机的双稳性和滞后性
Bistability and hysteresis of dipolar dynamos generated by turbulent convection in rotating spherical shells
摘要：
证明了旋转球壳中湍流对流磁流体动力偶极发电机的双稳态和磁滞现象。磁滞出现作为两个不同的制度之间的过渡偶极发电机具有相当不同的属性，包括轴对称极向场分量的幅度的显着差异，并在差分旋转的形式。的双稳态发生从发电机行动的发病高达约9倍的临界值的瑞利数的对流发病和在很宽的范围内的普通和磁普朗特数的值，包括值的统一。
英文摘要：
Bistability and hysteresis of magnetohydrodynamic dipolar dynamos generated by turbulent convection in rotating spherical fluid shells is demonstrated. Hysteresis appears as a transition between two distinct regimes of dipolar dynamos with rather different properties including a pronounced difference in the amplitude of the axisymmetric poloidal field component and in the form of the differential rotation. The bistability occurs from the onset of dynamo action up to about 9 times the critical value of the Rayleigh number for onset of convection and over a wide range of values of the ordinary and the magnetic Prandtl numbers including the value unity.
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