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JOURNALS // Meždunarodnyj naučno-issledovatel'skij žurnal // Archive

Meždunar. nauč.-issled. žurn., 2018 Issue 1-1(67), Pages 17–21 (Mi irj233)

PHYSICS AND MATHEMATICS

Role of air turbulence in generation of vorticity of typhoons and tornado

V. A. Smirnova, V. A. Smirnovb, A. A. Kharchevskya

a Moscow Technological University
b Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: Based on a two-scale hydrodynamic model considering the influence of turbulent pulsations on the average flow, a mechanism is developed for generating vorticity of typhoons and tornadoes due to atmospheric turbulence. A wavelet-analysis of pressure fluctuations in real atmospheric vortexes, tornadoes and hurricanes, Irene and Andrea is conducted in the paper. The characteristic frequencies of atmospheric pressure fluctuations are found, also the estimates of the influence of turbulent pulsations on the enhancement of vorticity in typhoons and tornadoes are obtained. The contribution of the turbulent mechanism can be compared with the effect of the stretching of the vortex lines.

Keywords: wavelet-analysis, turbulence, typhoon, tornado.

DOI: 10.23670/IRJ.2018.67.112



© Steklov Math. Inst. of RAS, 2024