Forced Convection Correlations: noncircular_cylinder
Nusselt number correlation constants for forced convection heat transfer. Covers external cross-flow over cylinders (Hilpert circular, noncircular shapes, Zukauskas), tube bank arrays (C1/m constants and C2 row correction factors), and fully developed laminar internal flow in noncircular ducts. Each record provides C and m coefficients for power-law Nu correlations, valid Reynolds number range, and source reference. 51 records from Incropera Chapter 7 (Tables 7.2-7.6) and Chapter 8 (Table 8.1).
| correlation type | correlation subtype | C (dimensionless) | Nu correlation text | Re max (dimensionless) | Re min (dimensionless) | conditions | geometry description | m (dimensionless) |
|---|---|---|---|---|---|---|---|---|
| noncircular_cylinder | hexagon_flat | 0.15 | Nu = C * Re_D^m * Pr^(1/3) | 90,700 | 4,500 | External cross-flow; properties at film temp T_f; Pr >= 0.7 | Hexagonal cylinder flat face facing flow | 0.638 |
| noncircular_cylinder | hexagon_pointy_high_Re | 0.039 | Nu = C * Re_D^m * Pr^(1/3) | 105,000 | 20,400 | External cross-flow; properties at film temp T_f; Pr >= 0.7 | Hexagonal cylinder point facing flow (Re 20400-105000) | 0.78 |
| noncircular_cylinder | hexagon_pointy_low_Re | 0.164 | Nu = C * Re_D^m * Pr^(1/3) | 20,400 | 5,200 | External cross-flow; properties at film temp T_f; Pr >= 0.7 | Hexagonal cylinder point facing flow (Re 5200-20400) | 0.638 |
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