The stability of inviscid Beltrami flow between parallel free-slip impermeable boundaries
The stability of inviscid Beltrami flow between parallel free-slip impermeable boundaries
复制标题
平行自由滑移不透水边界间无粘性贝尔特拉米流的稳定性
DOI:
10.1017/jfm.2022.1007
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发表时间:
2023
影响因子:
3.7
通讯作者:
Dritschel D
中科院分区:
文献类型:
--
作者:
Dritschel D
We present a family of exact inviscid three-dimensional Beltrami flows in a horizontally periodic domain lying between two parallel free-slip boundaries. Significantly, these flows are not stress free: the horizontal vorticity varies on each boundary. Using direct numerical simulations (employing horizontal hyperdiffusion only for numerical stability), we find that the largest-scale member of the family is unstable and breaks down into anisotropic turbulence, with relatively large horizontal vorticity at and near each boundary, and associated surface frontal features. We conjecture that all members of the family are similarly unstable. The free-slip boundaries play an important role in the late stages of the instability by constraining the deformation of vortex lines near the boundaries. This study appears to be the first to consider the role of boundary horizontal vorticity in an inviscid context.
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影响因子:
3.7
作者:
Steven M. Tobias
通讯作者:
Steven M. Tobias
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
V. Trkal
通讯作者:
V. Trkal
影响因子:
3.7
作者:
Martin Lellep;M. Linkmann;B. Eckhardt;A. Morozov
通讯作者:
A. Morozov
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
M. Reeuwijk;H. Jonker;K. Hanjalić
通讯作者:
K. Hanjalić
影响因子:
3.7
作者:
S. Terrington;K. Hourigan;M. Thompson
通讯作者:
M. Thompson