The computation of turbulent natural convection flows - Turbulence ...

Inclined Cavity-3D time-dependent simulations 300
wall to either a maximum, or a plateau, then shows a dip, before rising again
near the top end wall. The experimental data are not detailed enough but a
local Nu variation like the one indicated by the k-ε-AWF predications is un-
likely. The three-dimensional k-ε-AWF computations, thus return the correct
levels for the Nusselt number, but not the correct variation.
T
T
T
1
0.8
0.6
0.4
0.2
Y=0.9
EXP
k-ε-AWF
0
0 0.2 0.4 0.6 0.8 1
1
0.8
0.6
0.4
0.2
X
0
0 0.2 0.4 0.6 0.8 1
1
0.8
0.6
0.4
0.2
Y=0.3
Y=0.5
EXP
k-ε-AWF
X
EXP
k-ε-AWF
0
0 0.2 0.4 0.6 0.8 1
T
T
1
0.8
0.6
0.4
0.2
Y=0.7
0
0 0.2 0.4 0.6 0.8 1
1
0.8
0.6
0.4
0.2
X
EXP
k-ε-AWF
X
EXP
k-ε-AWF
Y=0.4
0
0 0.2 0.4 0.6 0.8 1
X
X
Figure 7.89 – Time-averaged temperature distributions resulting from k-ε-AWF
with limiter, Z=0.5.
T
1
0.8
0.6
0.4
0.2
Y=0.1
EXP
k-ε-AWF
0
0 0.2 0.4 0.6 0.8 1