Triadic resonances driven by thermal convection in a rotating sphere
Triadic resonances driven by thermal convection in a rotating sphere
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旋转球体中热对流驱动的三元共振
DOI:
10.1017/jfm.2020.1050
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发表时间:
2020-11
影响因子:
3.7
通讯作者:
Lin Yufeng
中科院分区:
文献类型:
--
作者:
Lin Yufeng
Abstract We report for the first time on triadic resonances in a rotating convection system. Using direct numerical simulations, we find that convective modes in a rotating spherical fluid can excite a pair of inertial modes whose frequencies and wavenumbers match the triadic resonance conditions. Depending on the structures of the convective modes, triadic resonances can lead to the growth of either a pair of modes with lower frequencies and wavenumbers, or a pair of modes with higher frequencies and wavenumbers, providing a possible mechanism for the bi-directional energy cascade. Increased thermal forcing leads to fully developed turbulence, which also exhibits wave-like motions, and is reminiscent of the energy spectrum of inertial wave turbulence. Our results suggest that the interaction of inertial waves plays an important role in rotating convection, which is of great importance in understanding the dynamics of planetary and stellar interiors.
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影响因子:
6.5
作者:
J. Zahn
通讯作者:
J. Zahn
DOI:
10.1146/annurev-astro-081913-035941
发表时间:
2014-06
影响因子:
33.3
作者:
G. Ogilvie
通讯作者:
G. Ogilvie
影响因子:
3.7
作者:
Lin Yufeng;Jackson Andrew
通讯作者:
Jackson Andrew
DOI:
10.1016/j.jcp.2015.10.056
发表时间:
2016-01
期刊:
J. Comput. Phys.
影响因子:
--
作者:
P. Marti;A. Jackson
通讯作者:
P. Marti;A. Jackson
影响因子:
4.6
作者:
Ye Zhou
通讯作者:
Ye Zhou