TY - JOUR
T1 - Nusselt number correlation for natural convection from vertical cylinders with triangular fins
AU - Lee, Myoungwoo
AU - Kim, Hyun Jung
AU - Kim, Dong Kwon
N1 - Funding Information:
This research was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT, and Future Planning ( NRF-2011-0010534 ).
Funding Information:
This research was supported in part by the Nano Material Technology Development Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT, and Future Planning ( NRF-2011-0030285 ).
Funding Information:
This research was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education ( NRF-2010-0023032 ).
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/1/25
Y1 - 2016/1/25
N2 - In this study, natural convection from vertical cylinders with triangular fins was experimentally investigated with various fin numbers, fin heights, and base temperatures. From the experimental data, we propose a correlation for estimating the Nusselt number, which is applicable when the Rayleigh number, ratio of the fin height to fin length, and fin number are in the ranges of 1000-120,000, 0.2-0.6, and 9-72, respectively. Using this correlation, a contour map depicting the thermal resistance as a function of the fin number and fin thickness is presented. This contour map shows the existence of the fin number and fin thickness, at which the thermal resistance is minimized.
AB - In this study, natural convection from vertical cylinders with triangular fins was experimentally investigated with various fin numbers, fin heights, and base temperatures. From the experimental data, we propose a correlation for estimating the Nusselt number, which is applicable when the Rayleigh number, ratio of the fin height to fin length, and fin number are in the ranges of 1000-120,000, 0.2-0.6, and 9-72, respectively. Using this correlation, a contour map depicting the thermal resistance as a function of the fin number and fin thickness is presented. This contour map shows the existence of the fin number and fin thickness, at which the thermal resistance is minimized.
KW - Natural convection
KW - Nusselt number
KW - Triangular fin
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U2 - 10.1016/j.applthermaleng.2015.10.105
DO - 10.1016/j.applthermaleng.2015.10.105
M3 - Article
AN - SCOPUS:84946866728
SN - 1359-4311
VL - 93
SP - 1238
EP - 1247
JO - Journal of Heat Recovery Systems
JF - Journal of Heat Recovery Systems
ER -