On coherent structures and heat transfer in strongly swirling impinging jets

被引：0
|
作者：
Abdurakipov, S. [1 ,2 ]
Sharaborin, D. [1 ,2 ]
机构：
[1] Kutateladze Inst Thermophys SB RAS, Novosibirsk, Russia
[2] Novosibirsk State Univ, Novosibirsk, Russia
来源：
XXXVI SIBERIAN THERMOPHYSICAL SEMINAR (STS 36) | 2020年 / 1677卷
基金：
俄罗斯基础研究基金会;
关键词：
FLAT SURFACE; NEAR-FIELD; FLOW;
D O I：
10.1088/1742-6596/1677/1/012002
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This work is devoted to the experimental study of coherent structures in swirling jets flowing onto a heated surface. To measure the velocity fields with a high acquisition rate of 3.5 kHz Stereo Particle Image Velocimetry (PIV) measurement system is used. Simultaneously with PIV measurements, the temperature of the heated surface is measured by high-speed thermometry. The experiments are carried out for three different cases of swirling and two distances from the nozzle to the impingement surface. It is shown that only in the case of strongly swirling jet breakdown of vortex core and bubble-type recirculation zone appear. In this flow regime, large-scale vortex structures of spiral shape are found. The contribution of coherent structures to the fluctuations of velocity and temperature is analyzed for a strongly swirling jet by using Spectral Proper Orthogonal Decomposition (SPOD) method and spatial Fourier transform. It is found that the strongly swirling jet for H/d = 1 provides most effective overall cooling of the surface for the considered flow configurations.
引用
收藏
页数：9
相关论文
共 50 条
  • [1] HEAT TRANSFER CHARACTERISTICS OF SWIRLING IMPINGING JETS
    Brown, Karl J.
    Persoons, Tim
    Murray, Darina B.
    PROCEEDINGS OF THE ASME INTERNATIONAL HEAT TRANSFER CONFERENCE - 2010, VOL 5: FUEL CELLS, GAS TURBINES, HEAT PIPES, JET IMPINGEMENT, RADIATION, 2010, : 657 - 665
  • [2] Heat Transfer Enhancement by Swirling Impinging Jets
    Nanan, Kwanchai
    Pimsarn, Monsak
    Wongcharee, Khwanchit
    Eiamsa-ard, Smith
    2ND INTERNATIONAL CONFERENCE ON COMMUNICATION AND TECHNOLOGY (ICCT 2015), 2015, : 413 - 420
  • [3] HEAT TRANSFER CHARACTERISTICS OF SWIRLING IMPINGING JETS
    Brown, Karl J.
    Murray, Darina B.
    Persoons, Tim
    O'Donovan, Tadhg S.
    IMECE 2009: PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 9, PTS A-C, 2010, : 1879 - 1889
  • [4] Simulation of heat transfer from swirling impinging jets
    Sunden, Bengt
    Larocque, Jerome
    PROCEEDINGS OF THE ASME TURBO EXPO 2005, VOL 3 PTS A AND B, 2005, : 765 - 772
  • [5] Heat transfer characteristics of swirling and non-swirling impinging turbulent jets
    Ahmed, Zahir U.
    Al-Abdeli, Yasir M.
    Guzzomi, Ferdinando G.
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2016, 102 : 991 - 1003
  • [6] Heat transfer rate and uniformity in multichannel swirling impinging jets
    Ianiro, Andrea
    Cardone, Gennaro
    APPLIED THERMAL ENGINEERING, 2012, 49 : 89 - 98
  • [7] Flow and heat transfer characteristics of turbulent swirling impinging jets
    Ikhlaq, Muhammad
    Al-Abdeli, Yasir M.
    Khiadani, Mehdi
    APPLIED THERMAL ENGINEERING, 2021, 196
  • [8] Transient heat transfer characteristics of swirling and non-swirling turbulent impinging jets
    Ikhlaq, Muhammad
    Al-Abdeli, Yasir M.
    Khiadani, Mehdi
    EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2019, 109
  • [9] Heat transfer of swirling impinging jets with TiO2-water nanofluids
    Wongcharee, K.
    Chuwattanakul, V.
    Eiamsa-ard, S.
    CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2017, 114 : 16 - 23
  • [10] Effect of Flow Confinement on the Hydrodynamics and Heat Transfer Characteristics of Swirling Impinging Jets
    Ahmed, Zahir U.
    Khan, Md. Habib U.
    Khayat, Roger E.
    Tasnim, Sumaiya
    PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING (ICME 2017), 2018, 1980
12345