Zobrazeno 1 - 10
of 64 902
pro vyhledávání: '"Shear layer"'
We investigate the perturbation dynamics in a supersonic shear layer using a combination of large-eddy simulations (LES) and linear-operator-based input-output analysis. The flow consists of two streams-a main stream (Mach 1.23) and a bypass stream (
Externí odkaz:
http://arxiv.org/abs/2407.17637
A novel combination of physics-based and data-driven post-processing techniques is proposed to extract acoustic-related shear-layer perturbation responses directly from spatio-temporally resolved schlieren video. The physics-based component is derive
Externí odkaz:
http://arxiv.org/abs/2407.05438
The gradient of rotation in the near-surface shear layer (NSSL) of the Sun provides valuable insights into the dynamics associated with the solar activity cycle and the dynamo. Results obtained with global oscillation mode-splittings lack resolution
Externí odkaz:
http://arxiv.org/abs/2404.02321
Autor:
Bian, Dongfen, Grenier, Emmanuel
In this article, thanks to a new and detailed study of the Green's function of Rayleigh equation near the extrema of the velocity of a shear layer, we obtain optimal bounds on the asymptotic behaviour of solutions to the linearized incompressible Eul
Externí odkaz:
http://arxiv.org/abs/2403.13549
Autor:
Kitchatinov, Leonid
Helioseismology has revealed an increase in the rotation rate with depth in a thin ($\sim$30 Mm) near-surface layer. The normalized rotational shear in this layer is independent of latitude. This rotational state is shown to be a consequence of the s
Externí odkaz:
http://arxiv.org/abs/2402.07421
Autor:
Kitchatinov, Leonid
Helioseismology has discovered a thin layer beneath the solar surface where the rotation rate increases rapidly with depth. The normalized rotational shear in the upper 10 Mm of the layer is constant with latitude. Differential rotation theory explai
Externí odkaz:
http://arxiv.org/abs/2311.07875
We present a theoretical model of the near-surface shear layer (NSSL) of the Sun. Convection cells deeper down are affected by the Sun's rotation, but this is not the case in a layer just below the solar surface due to the smallness of the convection
Externí odkaz:
http://arxiv.org/abs/2311.04197
We have measured zonal and meridional components of subsurface flows up to a depth of 30 Mm below the solar surface by applying the technique of ring diagram on Dopplergrams which are constructed from the spherical harmonic (SH) coefficients. The SH
Externí odkaz:
http://arxiv.org/abs/2312.11699
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