Direct numerical simulations of the turbulent annular jet with different diameter ratio

V. Ryzhenkov, R. Mullyadzhanov

Research output: Contribution to journalConference articlepeer-review

Abstract

We performed direct numerical simulations (DNS) of the turbulent annular jet flow for the Reynolds number Re = 8900 with three different values of the inner-to-outer diameter ratio (a = d / D = 0.3, 0.5, 0.7). The time-averaged velocity fields and fluctuations were analyzed. The low aspect ratio results in the shortest recirculation zone while for high a value the stagnation point features high level of turbulent kinetic energy. This is the evidence of the accompanying low-frequency oscillations of the recirculation zone.

Original languageEnglish
Article number012007
Number of pages6
JournalJournal of Physics: Conference Series
Volume1105
Issue number1
DOIs
Publication statusPublished - 28 Nov 2018
Event34th Siberian Thermophysical Seminar Dedicated to the 85th Anniversary of Academician A. K. Rebrov, STS 2018 - Novosibirsk, Russian Federation
Duration: 27 Aug 201830 Aug 2018

Keywords

  • FLOW
  • REGION
  • WAKE

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