[1] Morgan, V.T. (1975). “The overall convective heat transfer from a smooth cylinder.” Adv. in Heat Transfer, 11, pp. 199-264.
[2] Churchill, S.W. and Chu, H.H.S. (1975). “Correlating equations for laminar and turbulent free convection from a horizontal cylinder.” Int. J. Heat Mass Trans., 18(9), pp.1049-1053.
[3] Collis, D.C. and Williams, M.J. (1954). “Free convection of heat from fine wires.” Aeronautical Research Laboratories, Melbourne, Australia, Note 140.
[4] Sparrow, E.M. and Niethammer, J.E. (1981). “Effect of vertical separation distance and cylinder-to-cylinder temperature imbalance on natural convection for a pair of horizontal cylinders.” Int. J. Heat Transfer, 103(4), pp. 638-644.
[5] Tokura, I., Saito, H., Kishinami, K. and Muramoto, K. (1983). “An experimental study of free convection heat transfer from a horizontal cylinder in a vertical array set in free space between parallel walls.” Int. J. Heat Transfer, 104, pp.102-107.
[6] Chouikh, R., Guizani, A., Maalej, M. and Belghith, A. (2000). “Experimental study of the natural convection flow around an array of heated horizontal cylinders.” Renewable Energy, 21(1), pp. 65-78.
[7] Lieberman, J. and Gebhart, B. (1969). ”Interactions in natural convection from an array of heated elements, experimental.” Int. J. Heat Mass Trans, 12(11), pp. 1385-1396.
[8] Marsters, G.F. (1972).” Arrays of heated horizontal cylinders in natural convection.” Int. J. Heat Mass Trans, 15(5), pp. 921-933.
[9] Yousefi, T. and Ashjaee, M. (2007). ”Experimental study of natural convection heat transfer from vertical array of isothermal horizontal elliptic cylinders.” Exp. Therm. Fluid Sci., 32, pp. 240-248.
[10] Ashjaee, M. and Yousefi, T. (2007). ”Experimental study of free convection heat transfer from horizontal isothermal cylinders arranged in vertical and inclined arrays.” Int. J. Heat Transfer Eng., 28(5), pp. 460-471.
[11] Van Doormaal, J.P. and Raithby, G.D. (1984). “Enhancements of the simple method for predicting incompressible fluid flows.” Int. J. Heat Transfer, 11, pp. 147–163.
[12] Patankar, S.V. and Spalding, D.B. (1972). ”A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows.” Int. J. Heat Mass Transfer, 15, pp. 1787–1797.
[13] Leonard, B.P. (1979). ”A stable and accurate convective modeling procedure based on quadratic upstream interpolation.” Comput. Meth. Appl. Mech. Eng., 19, pp. 59–78.
[14] Patanka, S.V. (1980). “Numerical heat transfer and fluid flow.” Hemisphere Publ. Co., Washington, DC.
[15] American petroleum institute, (2008). API Specification 12K, Specification for Indirect Type Oilfield Heaters, eighth edition.
[16] Wilson, A.S. and Bassiouny, M.K. (2000). “Modeling of heat transfer for flow across tube banks.” Int. J. Chem. Eng. Process., 39, 1-14.