Page 121 - Introduction to Computational Fluid Dynamics
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P1: IWV
11:7
May 25, 2005
CB908/Date
0521853265c04
100
50 0 521 85326 5 2D BOUNDARY LAYERS
40
Re = 500 Pr = 0.7
30
f ∗ Re
(Uc / Ubar) ∗ 10
20
O
10 O
Previous Num Soln Nu x
O
O
O
O
0
0.000 0.025 0.050 0.075 + 0.100 0.125 0.150
X
Figure 4.8. Entrance region of a pipe – laminar flow.
100
Tw = Constant
X / D = 100
Nu (Pr = 5)
LRE Model
(Uc / Ubar) ∗ 10 Nu (Pr = 0.7)
10
f ∗ 1000
Nu (Laminar) = 3.667
1000 10000
Re
Figure 4.9. Fully developed flow and heat transfer in a pipe.
