Estimation of the height of the mixing layer from the altitude-time distributions of the dissipation rate of turbulent energy and the Richardson number

V. A. Banakh; A. V. Falits; A. A. Sukharev; A. M. Sherstobitov; I. V. Zaloznaya

doi:10.1117/12.2603414

15 December 2021 Estimation of the height of the mixing layer from the altitude-time distributions of the dissipation rate of turbulent energy and the Richardson number

V. A. Banakh, A. V. Falits, A. A. Sukharev, A. M. Sherstobitov, I. V. Zaloznaya

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Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119163R (2021) https://doi.org/10.1117/12.2603414
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

A comparison is made of the time variations in the height of the turbulent mixing layer, which is determined from the altitude-time distributions of the dissipation rate of the kinetic energy of turbulence and from the distributions of the Richardson number Ri . It is shown that qualitatively the time series of the height of the turbulent mixing layer, calculated according to the threshold value of the dissipation rate Thrɛ= 10^-4 м²/с³ and according to the criterion Ri <0.5, agree with each other.

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V. A. Banakh, A. V. Falits, A. A. Sukharev, A. M. Sherstobitov, and I. V. Zaloznaya "Estimation of the height of the mixing layer from the altitude-time distributions of the dissipation rate of turbulent energy and the Richardson number", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119163R (15 December 2021); https://doi.org/10.1117/12.2603414

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