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arXiv · 1908.11767

Turbulence in a stably stratified fluid: Onset of global anisotropy as a function of the Richardson number

Jayanta K. Bhattacharjee·Abhishek Kumar·Mahendra K. Verma
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Abstract

It is necessary to introduce an external forcing to induce turbulence in a stably stratified fluid. The Heisenberg eddy viscosity technique should in this case suffice to calculate a space-time averaged quantity like the global anisotropy parameter as a function of the Richardson number. We find analytically that the anisotropy increases linearly with the Richardson number, with a small quadratic correction. A numerical simulation of the complete equations shows the linear behaviour.

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Jayanta K. Bhattacharjee, Abhishek Kumar, Mahendra K. Verma. 2019-08-30. Turbulence in a stably stratified fluid: Onset of global anisotropy as a function of the Richardson number. https://doi.org/10.1088/1402-4896%2Fab36ce

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