TY - JOUR

T1 - Swirl effect on flow structure and mixing in a turbulent jet

AU - Kravtsov, Z. D.

AU - Sharaborin, D. K.

AU - Dulin, V. M.

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

PY - 2018/3/19

Y1 - 2018/3/19

N2 - The paper reports on experimental study of turbulent transport in the initial region of swirling turbulent jets. The particle image velocimetry and planar laser-induced fluorescence techniques are used to investigate the flow structure and passive scalar concentration, respectively, in free air jet with acetone vapor. Three flow cases are considered, viz., non-swirling jets and swirling jets with and without vortex breakdown and central recirculation zone. Without vortex breakdown, the swirl is shown to promote jet mixing with surrounding air and to decrease the jet core length. The vortex core breakdown further enhances mixing as the jet core disintegrates at the nozzle exit.

AB - The paper reports on experimental study of turbulent transport in the initial region of swirling turbulent jets. The particle image velocimetry and planar laser-induced fluorescence techniques are used to investigate the flow structure and passive scalar concentration, respectively, in free air jet with acetone vapor. Three flow cases are considered, viz., non-swirling jets and swirling jets with and without vortex breakdown and central recirculation zone. Without vortex breakdown, the swirl is shown to promote jet mixing with surrounding air and to decrease the jet core length. The vortex core breakdown further enhances mixing as the jet core disintegrates at the nozzle exit.

KW - VORTEX BREAKDOWN

UR - http://www.scopus.com/inward/record.url?scp=85045886298&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/980/1/012001

DO - 10.1088/1742-6596/980/1/012001

M3 - Conference article

AN - SCOPUS:85045886298

VL - 980

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012001

ER -