Investigation a single-spiral vortex in a swirl flow

Elizaveta S. Gesheva, Sergey I. Shtork, Sergey V. Alekseenko

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

The work is aimed at a detailed study of large-scale helical vortex structures emerging in a high turbulent intensively swirling flow. It was shown that the vortex formed in the chamber by installing diaphragm with shifted outlet is folded into a single-helical vortex. The flow visualization shows that although the vortex axis performs slow oscillations (precession), on average this structure is fixed in space. The velocity fields were measured with the aid of a nonintrusive method of flow diagnostics (PIV). Verification of the calculation results obtained using a LES simulation was performed based on measured experimental data to confirm the correctness of the chosen mathematical modelling approach. It has been asserted that the investigated regimes are in a self-similarity area relative to Reynolds number.

Original languageEnglish
Article number02025
JournalMATEC Web of Conferences
Volume115
DOIs
Publication statusPublished - 10 Jul 2017
Externally publishedYes
Event33rd Siberian Thermophysical Seminar, STS 2017 - Novosibirsk, Russian Federation
Duration: 6 Jun 20178 Jun 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Engineering(all)
  • Materials Science(all)

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