Impingement of an impact jet onto a spherical cavity. Flow structure and heat transfer

被引：53
|
作者：
Terekhov, V. I. [1 ]
Kalinina, S. V. [1 ]
Mshvidobadze, Yu. M. [1 ]
Sharov, K. A. [1 ]
机构：
[1] Kutateladze Inst Thermophys SB RAS, Novocherkassk, Russia
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2009年 / 52卷 / 11-12期
基金：
俄罗斯基础研究基金会;
关键词：
Impact jet; Heat transfer; Spherical cavity; Heat-flow pulsations; CONVEX HEMISPHERICAL SURFACE; ROUND IMPINGING JET; CYLINDRICAL SURFACES; CONCAVE SURFACE; FLAT-PLATE;
D O I：
10.1016/j.ijheatmasstransfer.2009.01.018
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An experimental study of flow characteristics and heat transfer for jet impingement cooling of obstacles in the form of single spherical cavities is reported. The distributions of flow velocities between the nozzle and the obstacle, and also the fields of pressure and heat-transfer coefficients inside the cavity were measured. It is found that, at a value of depth the cavity generates the large-scale toroidal vortex, essentially influencing on the heat transfer. The cavity flow becomes unstable, exhibiting low-frequency pulsations of local heat fluxes. In the examined ranges of Reynolds numbers, Re = (1.2-5.8)10(4). and cavity depths (equal to or smaller than 0.5D(c)) the local heat-transfer intensity in the cavity is lower than that on a flat obstacle; yet, this reduction is almost fully compensated by increased area of the heat-exchanging surface. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2498 / 2506
页数：9
相关论文
共 50 条
  • [21] Flow Structure and Heat Transfer of Jet Impingement on a Rib-Roughened Flat Plate
    Alenezi, Abdulrahman H.
    Almutairi, Abdulrahman
    Alhajeri, Hamad M.
    Addali, Abdulmajid
    Gamil, Abdelaziz A. A.
    ENERGIES, 2018, 11 (06):
  • [22] RANS simulations of a turbulent flow structure and convective heat transfer in a bubbly jet impingement
    Pakhomov, M. A.
    PROCEEDINGS OF THE EIGHTH INTERNATIONAL SYMPOSIUM ON TURBULENCE HEAT AND MASS TRANSFER (THMT-15), 2015, : 631 - 634
  • [23] Flow Visualization and Heat Transfer Characteristics of Liquid Jet Impingement
    Jafar, Farial A.
    Thorpe, Graham R.
    Turan, Ozden F.
    INTERNATIONAL JOURNAL FOR COMPUTATIONAL METHODS IN ENGINEERING SCIENCE & MECHANICS, 2012, 13 (04): : 239 - 253
  • [24] NUMERICAL STUDY ON FLOW AND HEAT TRANSFER CHARACTERISTICS OF JET IMPINGEMENT
    Wang, Xinjun
    Liu, Rui
    Bai, Xiaowei
    Yao, Jinling
    PROCEEDINGS OF THE ASME TURBO EXPO 2011, VOL 5, PTS A AND B, 2012, : 1155 - 1164
  • [25] Flow field effects on heat transfer in confined jet impingement
    Fitzgerald, JA
    Garimella, SV
    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1997, 119 (03): : 630 - 632
  • [26] Heat transfer and flow analysis of jet impingement on concave surfaces
    Taghinia, Javad
    Rahman, Mizanur
    Siikonen, Timo
    APPLIED THERMAL ENGINEERING, 2015, 84 : 448 - 459
  • [27] Multiple flow patterns and heat transfer in confined jet impingement
    Li, XC
    Gaddis, JL
    Wang, T
    INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2005, 26 (05) : 746 - 754
  • [28] ENHANCED HEAT TRANSFER OF FLOW BOILING COMBINED WITH JET IMPINGEMENT
    Wei, Jinjia
    Zhang, Yonghai
    Zhao, Jianfu
    Guo, Dong
    INTERFACIAL PHENOMENA AND HEAT TRANSFER, 2013, 1 (01) : 13 - 28
  • [29] Heat transfer during pulsating liquid jet impingement onto a vertical wall
    Wassenberg, J.
    Stephan, P.
    Gambaryan-Roisman, T.
    HEAT AND MASS TRANSFER, 2021, 57 (04) : 617 - 629
  • [30] Confined jet impingement of liquid nitrogen onto different heat transfer surfaces
    Zhang, P.
    Xu, G. H.
    Fu, X.
    Li, C. R.
    CRYOGENICS, 2011, 51 (06) : 300 - 308
12345