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Nusselt Number Correlation
Classification System
Flow Driving Force
I.
Forced Convection
II.
Natural Convection
III.
Mixed Convection
Fluid Domain
A.
External Flow
B.
Internal Flow
Geometry
1.
Flat surface
2.
Sphere
3.
Cylinder
4.
Tube Bank
5.
Packed Bed
6.
Annulus
7.
Parallel Plates
8.
Parallelepiped
9.
Duct (square or rectangle)
10.
Round Impinging Jet
11.
Slot Impinging Jet
12.
Hexagon
13.
Ellipse
14.
Triangle
15.
Octagon
Surface Orientation with respect to Gravity (for natural convection)
a.
Horizontal
b.
Vertical
c.
Inclined
Flow direction (for forced convection)
(i)
Parallel to Axis
(ii)
Normal to Axis
(iii)
Oblique to Axis
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View Full Document Nusselt Number Correlation’s
Nusselt Number Classification
Incropera and DeWitt [Heat Transfer 5
th
Ed.]
IA1(i) [laminar, average, isothermal]
Eq. (7.25)
IA1(i) [laminar, average, uniform heat flux]
Eq. (7.41)
IA1(i) [laminar, local, isothermal]
Eqs. (7.21), (7.27)
IA1(i) [laminar, local, unheated starting length]
Eq. (7.34)
IA1(i) [laminar, local, uniform heat flux]
Eq. (7.37)
IA1(i) [mixed, average, isothermal]
Eq. (7.31)
IA1(i) [turbulent, average, isothermal]
Eq. (7.31)
IA1(i) [turbulent, local, isothermal]
Eq. (7.30)
IA1(i) [turbulent, local, uniform heat flux]
Eq. (7.38)
IA1(i) [turbulent, local, unheated starting length]
Eq. (7.35)
IA1(i) [average, unheated starting length]
Eq. (7.36)
IA1(ii)
Eq. (7.45) with Table 7.3
IA2( i,ii,iii)
Eq. (7.48)
IA2(ii)[liquid droplet, average]
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This note was uploaded on 07/25/2008 for the course ME 410 taught by Professor Benard during the Spring '08 term at Michigan State University.
 Spring '08
 BENARD
 Heat Transfer

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