A Conjugate Heat Transfer Analysis of a Triangular Finned Annulus Based on DG-FEM

Table 1

% overestimates of Nusselt number for , = 3°, and with [15].

1	10	20	50	100	500	1000	5000
0.2	4	84.8	12.1	6.7	2.9	1.5	0.3	0.2	0.0
	8	102.1	17.5	9.9	4.4	2.3	0.5	0.2	0.0
	12	117.6	21.8	12.3	5.4	2.8	0.6	0.3	0.1
	16	129.6	25.1	14.3	6.4	3.3	0.7	0.3	0.1
	20	138.0	26.0	14.5	6.3	3.3	0.7	0.3	0.1
	24	144.2	26.7	14.9	6.4	3.3	0.7	0.3	0.1
0.4	4	117.8	26.3	16.5	8.1	4.4	0.9	0.5	0.1
	8	191.0	53.3	34.0	16.7	9.1	2.0	1.0	0.2
	12	250.8	71.5	44.6	21.4	11.5	2.5	1.2	0.3
	16	288.4	80.0	48.7	22.8	12.2	2.6	1.3	0.3
	20	307.9	83.8	53.1	27.1	15.4	3.5	1.8	0.4
	24	317.8	78.9	46.3	21.0	11.1	2.3	1.2	0.2
0.6	4	150.5	41.4	27.5	14.3	8.1	1.8	0.9	0.2
	8	333.8	110.7	73.6	37.8	21.1	4.7	2.4	0.5
	12	531.5	172.9	110.9	54.8	29.9	6.5	3.3	0.7
	16	671.1	206.8	128.4	61.2	32.8	7.0	3.5	0.7
	20	744.2	216.9	132.4	62.4	33.4	7.1	3.6	0.7
	24	774.3	214.3	129.4	60.7	32.5	6.9	3.5	0.7
0.8	4	170.1	50.3	34.1	18.0	10.2	2.3	1.2	0.2
	8	459.4	157.8	105.0	54.0	30.2	6.7	3.4	0.7
	12	916.8	300.7	192.4	95.1	52.1	11.4	5.8	1.2
	16	1460.2	446.2	275.9	131.6	70.9	15.2	7.7	1.5
	20	2019.6	574.3	347.2	162.3	86.6	18.4	9.3	1.9
	24	2482.4	665.9	405.2	202.0	116.2	28.2	14.6	3.0