ELECTROHYDRODYNAMIC MODEL OF FORMING TORNADO AND DOWNBURST FROM THE THUNDERCLOUD

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Maslov, S A; Natyaganov, V L

ELECTROHYDRODYNAMIC MODEL OF FORMING TORNADO AND DOWNBURST FROM THE THUNDERCLOUD Journal Article

Mechanics, Materials Science & Engineering, 19 , 2019, ISSN: 2412-5954.

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Authors: S.A. Maslov, V.L. Natyaganov

ABSTRACT. Basing on the electrohydrodynamic equations system, the article researches influence of parent thundercloud charge distribution, atmospheric electric field perturbations and giant dielectric permittivity effect on the process of forming tornadoes and downbursts. The authors first suggested formula describing the transformation of dipole thundercloud charge structure to tripole one. The paper represents electrohydrodynamic model of forming downburst from the dipole cloud and considers the role of tripole thundercloud charge structure in the process of tornado funnel formation and appearing number of accompanying phenomena.

Keywords: atmospheric electric field, thundercloud, dipole and tripole electric structure, downburst, tornado, electrohydrodynamics, electrohydrodynamic pressure

DOI 10.2412/mmse.64.85.130

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