Conjugate Natural Convection: A Study of Optimum Fluid Flow and Heat Transfer in Eccentric Annular Channels

Table 3

Comparison with available conventional forced convection results for eccentric annular channel having linear axial increment, K_r = 1000, E = 0.6, χ₂ = 0.5, δ_i = 0.001, δ_o = 0.002, Pr = 0.7.

Quantities/results	Current	El-Shaarawi and Haider	% err.	Current	Shah and London	% err.
(dp/dz)fd	32.247	32.207	0.124	32.247	31.818	1.348
	Current	El-Shaarawi and Haider	% err.	Current	Trombetta	% err.
	3.595	3.593	0.056	3.595	3.582	0.363
	5.741	5.738	0.052	5.741	5.746	0.087
	4.762	4.762	0.008	4.762	4.754	0.168