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

M. P. Tokarev, M. Yu Nichik, O. A. Gobyzov, S. S. Abdurakipov, V. M. Dulin

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференциирецензирование

Аннотация

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).

Язык оригиналаанглийский
Номер статьи012099
ЖурналJournal of Physics: Conference Series
Том2057
Номер выпуска1
DOI
СостояниеОпубликовано - 8 нояб. 2021
Событие6th 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 - Sevastopol, Украина
Продолжительность: 22 авг. 202129 авг. 2021

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