TY - JOUR

T1 - Study of the influence of an external flow rate perturbation on the vortex structure and heat transfer in impinging jets

AU - Tokarev, M. P.

AU - Nichik, M. Yu

AU - Gobyzov, O. A.

AU - Abdurakipov, S. S.

AU - Dulin, V. M.

N1 - Funding Information: The work was supported by RFBR (grant ? 20-08-01093) via IT SB RAS. The equipment is provided in frames of state contract with IT SB RAS. Publisher Copyright: © 2021 Institute of Physics Publishing. All rights reserved.

PY - 2021/11/8

Y1 - 2021/11/8

N2 - The study of physical processes dominating in submerged turbulent jets impinging on a wall is an important task because this configuration is utilized in various applications. The efficiency of heat transfer in this configuration has been a subject of a long-term study. Active flow control technique and the optimization of the control signal can be applied to exploit inherent flow properties to further improve the heat transfer from the wall in impingent jets. In this paper, IR-thermography and time-resolved PIV measurements are used for the diagnostics of wall temperature fields and large-scale vortex dynamics under external flow rate forcing control. It is found that the low-frequency forcing (for the Strouhal number St = 0.6) increases integral temperature on the wall as compared to the unforced case and the high-frequency forcing (St = 0.9).

AB - The study of physical processes dominating in submerged turbulent jets impinging on a wall is an important task because this configuration is utilized in various applications. The efficiency of heat transfer in this configuration has been a subject of a long-term study. Active flow control technique and the optimization of the control signal can be applied to exploit inherent flow properties to further improve the heat transfer from the wall in impingent jets. In this paper, IR-thermography and time-resolved PIV measurements are used for the diagnostics of wall temperature fields and large-scale vortex dynamics under external flow rate forcing control. It is found that the low-frequency forcing (for the Strouhal number St = 0.6) increases integral temperature on the wall as compared to the unforced case and the high-frequency forcing (St = 0.9).

UR - http://www.scopus.com/inward/record.url?scp=85119610654&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/2057/1/012099

DO - 10.1088/1742-6596/2057/1/012099

M3 - Conference article

AN - SCOPUS:85119610654

VL - 2057

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012099

T2 - 6th All-Russian Conference on Thermophysics and Physical Hydrodynamics, TPH 2021 and the School for Young Scientists on Thermal Physics and Physical Hydrodynamics: Modern Challenges, TPHMC2021

Y2 - 22 August 2021 through 29 August 2021

ER -