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Table 4

The average errors of Nu and f compared with ones predicted by Zhao’s and Meshram’s correlations.

Pressure (MPa) 6.5 7.5 9.5
Average error (%)
Nu Zhao et al. [25] 90.95 88.59 81.41
Meshram et al. [14] 21.33 19.43 14.56
ƒ Zhao et al. [25] 10.46 40.38 10.67
Meshram et al. [14] 16.79 17.23 17.73