TY - JOUR

T1 - An experimental study of subsonic microjets escaping from a flat nozzle

AU - Aniskin, V. M.

AU - Maslov, A. A.

AU - Mukhin, K. A.

N1 - Publisher Copyright: © 2017, Pleiades Publishing, Ltd.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - We have experimentally studied subsonic laminar gas jets escaping from a flat nozzle with dimensions of 83.3 × 3600 μm. Reynolds numbers calculated for the given nozzle height and average flow velocity at the nozzle output edge ranged within 58–154. The working gas was air at room temperature. Distributions of the gas velocity and its pulsation along the jet axis were determined. It is established that the obtained characteristics of laminar subsonic microjets are fundamentally different from those of macroscopic turbulent jets. Based on the results of velocity pulsation measurements, it is shown that a laminar–turbulent flow transition is present and its position is determined.

AB - We have experimentally studied subsonic laminar gas jets escaping from a flat nozzle with dimensions of 83.3 × 3600 μm. Reynolds numbers calculated for the given nozzle height and average flow velocity at the nozzle output edge ranged within 58–154. The working gas was air at room temperature. Distributions of the gas velocity and its pulsation along the jet axis were determined. It is established that the obtained characteristics of laminar subsonic microjets are fundamentally different from those of macroscopic turbulent jets. Based on the results of velocity pulsation measurements, it is shown that a laminar–turbulent flow transition is present and its position is determined.

KW - TURBULENT JET

KW - HEAT-TRANSFER

KW - FLOW

UR - http://www.scopus.com/inward/record.url?scp=85028085475&partnerID=8YFLogxK

U2 - 10.1134/S1063785017070161

DO - 10.1134/S1063785017070161

M3 - Article

AN - SCOPUS:85028085475

VL - 43

SP - 638

EP - 640

JO - Technical Physics Letters

JF - Technical Physics Letters

SN - 1063-7850

IS - 7

ER -