https://doi.org/10.1051/epjconf/20158201001
On the viscosity influence on a helical vortex flament evolution
1 Novosibirsk State University, Russia
2 Kutateladze Institute of Thermophysics, Novosibirsk, Russia
a Corresponding author: m.agafontseva@gmail.com
Published online: 20 January 2015
Helical vortices whose parameters have a strong influence on the efficiency of the apparatus is often occur in technical devices using swirling flow (cyclones, separators, etc.). To date the internal structure of such vortices is poorly understood. In [1] a model of helical vortex with uniform vorticity distribution in the core is proposed. Vortices arising in real flow always have a smooth vorticity distribution due to the viscosity action. The problem on steady moving helical vortices with the vortex core of small size in an inviscid fluid was solved in [2]. The non-orthogonal ‘helical’ coordinate system was introduced that allowed author to reduce the problem to two dimensional one. However, the velocity of the vortex motion was written only in the form of a quadratures computation of which is difficult. This paper presents first attempt for research on the diffusion and dynamics of a viscous helical vortex.
© Owned by the authors, published by EDP Sciences, 2015
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