Recent Advances in Heat Transfer Enhancements: A Review Report

Table 3

Constants (a)–(d) for formula (45) along with the Ranges of the Parameters [154].

H (m)	a	b	c	D
0.125	1.51654	0.3471	0.1081	−0.4079
0.250	1.3951	0.3144	0.4538	0.0278
200≤Re𝐷ℎ=𝜌𝑓𝑢𝑚𝐻𝜇𝑓𝑘≤2000;0.125≤𝑤(𝑚)≤0.5;1≤^𝑠𝑘𝑓≤6600;