TY - JOUR

T1 - Direct numerical simulations of the turbulent annular jet with different diameter ratio

AU - Ryzhenkov, V.

AU - Mullyadzhanov, R.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2018/11/28

Y1 - 2018/11/28

N2 - 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.

AB - 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.

KW - FLOW

KW - REGION

KW - WAKE

UR - http://www.scopus.com/inward/record.url?scp=85058226110&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1105/1/012007

DO - 10.1088/1742-6596/1105/1/012007

M3 - Conference article

AN - SCOPUS:85058226110

VL - 1105

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012007

T2 - 34th Siberian Thermophysical Seminar Dedicated to the 85th Anniversary of Academician A. K. Rebrov, STS 2018

Y2 - 27 August 2018 through 30 August 2018

ER -