Full Text:   <4534>

CLC number: TK01

On-line Access: 2012-05-04

Received: 2011-08-16

Revision Accepted: 2012-02-10

Crosschecked: 2012-03-20

Cited: 3

Clicked: 4592

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.5 P.353-360


Modeling natural convection heat transfer from perforated plates

Author(s):  Zan Wu, Wei Li, Zhi-jian Sun, Rong-hua Hong

Affiliation(s):  Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zjsun@zju.edu.cn

Key Words:  Staggered pattern perforation, Natural convection, Inclined plate, Parallel plate, Rectangular fins

Zan Wu, Wei Li, Zhi-jian Sun, Rong-hua Hong. Modeling natural convection heat transfer from perforated plates[J]. Journal of Zhejiang University Science A, 2012, 13(5): 353-360.

@article{title="Modeling natural convection heat transfer from perforated plates",
author="Zan Wu, Wei Li, Zhi-jian Sun, Rong-hua Hong",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Modeling natural convection heat transfer from perforated plates
%A Zan Wu
%A Wei Li
%A Zhi-jian Sun
%A Rong-hua Hong
%J Journal of Zhejiang University SCIENCE A
%V 13
%N 5
%P 353-360
%@ 1673-565X
%D 2012
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1100222

T1 - Modeling natural convection heat transfer from perforated plates
A1 - Zan Wu
A1 - Wei Li
A1 - Zhi-jian Sun
A1 - Rong-hua Hong
J0 - Journal of Zhejiang University Science A
VL - 13
IS - 5
SP - 353
EP - 360
%@ 1673-565X
Y1 - 2012
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1100222

staggered pattern perforations are introduced to isolated isothermal plates, vertical parallel isothermal plates, and vertical rectangular isothermal fins under natural convection conditions. The performance of perforations was evaluated theoretically based on existing correlations by considering effects of ratios of open area, inclined angles, and other geometric parameters. It was found that staggered pattern perforations can increase the total heat transfer rate for isolated isothermal plates and vertical parallel plates, with low ratios of plate height to wall-to-wall spacing (H/s), by a factor of 1.07 to 1.21, while only by a factor of 1.03 to 1.07 for vertical rectangular isothermal fins, and the magnitude of enhancement is proportional to the ratio of open area. However, staggered pattern perforations are detrimental to heat transfer enhancement of vertical parallel plates with large H/s ratios.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1]Al-Essa, A.H., Al-Hussien, F.M.S., 2004. The effect of orientation of square perforations on the heat transfer enhancement from a fin subjected to natural convection. Heat and Mass Transfer, 40(6-7):509-515.

[2]Aung, W., 1972. Fully developed laminar free convection between vertical plates heated asymmetrically. International Journal of Heat and Mass Transfer, 15(8):1577-1580.

[3]Bar-Cohen, A., Jelinek, M., 1985. Optimum arrays of longitudinal, rectangular fins in convective heat transfer. Heat Transfer Engineering, 6(3):68-78.

[4]Baskaya, S., Sivrioglu, M., Ozek, M., 2000. Parametric study of natural convection heat transfer from horizontal rectangular fin arrays. International Journal of Thermal Sciences, 39(8):797-805.

[5]Bejan, A., 2004. Convection Heat Transfer, 3rd Edition. John Wiley & Sons, Inc., New York, p.178-242.

[6]Churchill, S.W., Chu, H.H.S., 1975. Correlating equations for laminar and turbulent free convection from a vertical plate. International Journal of Heat and Mass Transfer, 18(11):1323-1329.

[7]Elenbass, W., 1942. The dissipation of heat by free convection: the inner surface of vertical tubes of different shapes of cross-section. Physica, 9(8):865-874.

[8]Elshafei, E.A.M., 2010. Natural convection heat transfer from a heat sink with hollow/perforated circular pin fins. Energy, 35(7):2870-2877.

[9]Huh, C., Schaff, W.J., Eastman, L.F., Park, S.J., 2004. Temperature dependence of performance of InGaN/GaN MQW LED switch different indium compositions. IEEE Electron Device Letters, 25(2):61-63.

[10]Kraus, A.D., 1988. Sixty-five years of extended surface technology (1922–1987). Applied Mechanics Reviews, 41(9):321-364.

[11]Morrone, B., 2001. Natural convection between parallel plates with conjugate conductive effects. Numerical Heat Transfer, Part A: Applications, 40(8):873-886.

[12]Raithby, G.D., Hollands, K.G.T., 1984. Natural Convection. In: Rohsenow, W., Hartnett, J., Ganic, E. (Eds.), Handbook of Heat Transfer Fundamentals, 2nd Edition. McGraw-Hill Book Company, New York, p.1-94.

[13]Sahin, B., Demir, A., 2008. Performance analysis of a heat exchanger having perforated square fins. Applied Thermal Engineering, 28(5-6):621-632.

[14]Sugiura, L., 1997. Dislocation motion in GaN light-emitting devices and its effect on device lifetime. Journal of Applied Physics, 81(1):633-638.

[15]Turgut, O., Onur, N., 2007. An experimental and three-dimensional numerical study of natural convection heat transfer between two horizontal parallel plates. International Communications in Heat and Mass Transfer, 34(5):644-652.

[16]Vollaro, A.L., Grignaffini, S., Gugliermetti, F., 1999. Optimum design of vertical rectangular fin arrays. International Journal of Thermal Sciences, 38(6):525-529.

Open peer comments: Debate/Discuss/Question/Opinion


Please provide your name, email address and a comment

Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE