The H2-forced convection in a rectangular duct of large aspect ratio (>10) is studied. It is found that the short ends have non-negligible effects on the Nusselt number and the temperature distribution. Even at infinite aspect ratios, the Nusselt number depends on the net heat addition from the ends, but not how they are distributed.

References

References
1.
Wang
,
C. Y.
,
2014
, “
On the Nusselt Number for H2 Heat Transfer in Rectangular Ducts of Large Aspect Ratios
,”
ASME J. Heat Transfer
,
136
(
7
), p.
074501
.
2.
Shah
,
R. K.
, and
London
,
A. L.
,
1978
,
Laminar Forced Convection in Ducts
,
Academic
,
New York
.
3.
Siegel
,
R.
, and
Savino
,
J. M.
,
1965
, “
An Analytical Solution of the Effect of Peripheral Wall Conduction on Laminar Forced Convection in Rectangular Channels
,”
ASME J. Heat Transfer
,
87
(
1
), pp.
59
66
.
4.
Spiga
,
M.
, and
Morini
,
G. L.
,
1996
, “
Nusselt Numbers in Laminar Flow for H2 Boundary Conditions
,”
Int. J. Heat Mass Transfer
,
39
(
6
), pp.
1165
1174
.
5.
Barletta
,
A.
,
Rossi di Schio
,
E.
, and
Zanchini
,
E.
,
2003
, “
Combined Forced and Free Flow in a Vertical Rectangular Duct With Prescribed Wall Heat Flux
,”
Int. J. Heat Fluid Flow
,
24
(
6
), pp.
874
887
.
6.
Savino
,
J. M.
, and
Siegel
,
R.
,
1964
, “
Laminar Forced Convection in Rectangular Channels With Unequal Heat Addition on Adjacent Sides
,”
Int. J. Heat Mass Transfer
,
7
(
7
), pp.
733
741
.
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