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

Table 2

Two mesh combinations in R-direction of outer and inner cylinder walls.

Parameters/mesh size		δo = 0.2, δi = 0.1
		10 & 20	12 & 25	25 & 25
	Value	2.03697	2.03753	2.03656
	% err.	0.020	0.048
	Value	−7.580 exp − 01	−7.600 exp − 01	−7.560 exp − 01
	% err.	0.316	0.462
	Value	3.37503	3.37371	3.36884
	% err.	0.184	0.145
	Value	1.91307	1.91780	1.91182
	% err.	0.065	0.313
	Value	3.960 exp − 01	3.960 exp − 01	3.950 exp − 01
	% err.	0.250	0.148
Time (min.)	Value	12.9	14	18.3
	% ratio	70.492	76.503