TY - JOUR
ID - 38037
TI - Exact Analytical and Numerical Solutions for Convective Heat Transfer in a Semi-Spherical Extended Surface with Regular Singular Points
JO - Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
JA - IJCCE
LA - en
SN - 1021-9986
AU - Nematollahzadeh, Ali
AU - Jangara, Hossein
AD - Chemical Engineering Department, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, I.R. IRAN
Y1 - 2021
PY - 2021
VL - 40
IS - 3
SP - 980
EP - 989
KW - Convective heat transfer
KW - Semi-spherical extended surface
KW - Exact analytical solution
KW - Mathieu's equation
DO - 10.30492/ijcce.2020.38037
N2 - In this study, an exact analytical solution for the convective heat transfer equation from a semi-spherical fin was presented. To obtain a mathematical model, the system was assumed to be a lump in the vertical direction and the governing equation in the Cartesian coordinate was transferred to the Mathieu equation. The exact solution was compared with numerical results such as the finite difference method and midpoint method with Richardson extrapolation (Midrich). Not surprisingly, the exact solution prevailed over the numerical solutions in terms of accuracy and ease of use. Furthermore, the effect of Biot number on the heat transfer of the fin and the fine performance was investigated. The relative error of the results obtained from the analytical and numerical solutions at the base, center, and tip of the fin was 0, 7.72, and 40.25 percent, respectively. The results showed that the relative error between the analytical and numerical solutions depends on the Biot number and varies as a function of the fin length. The obtained analytical solution could be encouraging from different mathematical and industrial applications' points of view.
UR - http://www.ijcce.ac.ir/article_38037.html
L1 - http://www.ijcce.ac.ir/article_38037_47b8a80026750ae1f787979646e91434.pdf
ER -