HEAT TRANSFER AUGMENTATION FROM EXTENDED SURFACE USING DIMPLES

被引:0
作者
Mehta, Jay D. [1 ]
Colah, Fay N. [1 ]
Rao, Anurag P. [1 ]
Pendse, Vineeta P. [1 ]
Bagal, Vyankatesh U. [2 ]
Ajmera, Kevin P. [1 ]
机构
[1] Univ Mumbai, Mumbai, Maharashtra, India
[2] Dwarkadas J Sanghvi Colll Engn, Mumbai, Maharashtra, India
来源
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2018, VOL 8B | 2019年
关键词
CHANNEL; FLOW; PROTRUSIONS; NUMBER;
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摘要
This paper concentrates on comparing dimples to improve the heat transfer rate from extended surfaces under forced convection conditions. Dimples are milled on the surface of the fins while keeping the exposed surface area between the various designs as constant. Spherical dimples, ellipsoidal dimples, cylindrical dimples, and pyramidal dimples are selected as part of the paper. Experimental results are compared with results obtained from simulation. The paper concludes that surface modifications improve the heat transfer rates. The paper also compares the thermal performance of various shapes of dimples.
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页数:12
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共 18 条
  • [1] Bergman T.L., 2007, Fundamentals of Heat and Mass Transfer
  • [2] Burgess N., 2002, ASME 2002 INT MECH E, P49, DOI 10.1115/IMECE2002-32941.
  • [3] Effects of dimple depth on channel nusselt numbers and friction factors
    Burgess, NK
    Ligrani, PM
    [J]. JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2005, 127 (08): : 839 - 847
  • [4] Heat transfer behavior of flat plate having 45 degrees ellipsoidal dimpled surfaces
    Katkhaw, Nopparat
    Vorayos, Nat
    Kiatsiriroat, Tanongkiat
    Khunatorn, Yottana
    Bunturat, Damorn
    Nuntaphan, Atipoang
    [J]. CASE STUDIES IN THERMAL ENGINEERING, 2014, 2 (02) : 67 - 74
  • [5] Kline S. J., MECH ENG
  • [6] Ligrani P. M., 2001, PHYS FLUID, V13
  • [7] Comparison of heat transfer augmentation techniques
    Ligrani, PM
    Oliveira, MM
    Blaskovich, T
    [J]. AIAA JOURNAL, 2003, 41 (03) : 337 - 362
  • [8] Flow structure and local Nusselt number variations in a channel with dimples and protrusions on opposite walls
    Ligrani, PM
    Mahmood, GI
    Harrison, JL
    Clayton, CM
    Nelson, DL
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2001, 44 (23) : 4413 - 4425
  • [9] Mahmood G. I., 2000, ASME TURBO EXPO 2000, V3
  • [10] Heat transfer in a dimpled channel: combined influences of aspect ratio, temperature ratio, Reynolds number, and flow structure
    Mahmood, GI
    Ligrani, PM
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2002, 45 (10) : 2011 - 2020