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u-velocity
y
-0.5 -0.25 0 0.25 0.5 0.75 1 1.25 1.5 1.750
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Re=100Re=1
000
Re=5
000
Re=1
0000
Ghiaetal.Present50X50meshPresent100X100mesh
TimeC
d,C
l0 25 50 75 100-1
-0.5
0
0.5
1
1.5
2
Cd=1.38±0.045Cl =±0.694St =0.196
θTH
adiabatic
TC
adiabatic
H
L/2
Pr = 0.1 Pr = 10
θ (o)
Nu
0 30 60 90 120 150 1800
4
8
12
16
20
24
Demirdzic et al.1547 triangularcells9787 mixed cells64X32 quad cells
y
Nu
0 0.2 0.4 0.6 0.8 10
2
4
6
8
10
12
14
16
Demirdzic et al.1547 triangular cells9787 mixed cells64X32 quad cells
10.125
9.5
8.25
7
5.75
4.5
3.875
2.62
5
11.3
75
3.875
10.125
9.5
8.25
7
5.75
4.5
Time
Nu
0 10 20 301
1.5
2
2.5
3
Cold wallHot wall
33 34 35 362.55
2.6
2.65
2.7
2.75
������
������
L
L
W
W
adiabatic
TcThsolid body
11 10
9
8
765
4
3
11 109
7
54 3
Water(fluid 1)
Silicon oil 2 cSt(fluid 2)
adiabatic wall
adiabatic wall
TcTh
L
H
Nu
Verti
calw
all
0 1 2 3 4 5 6 70
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Koster, NguyenPresent
Hot wall
Cold wall
��������
��������
Solid Gallium
adiabatic
H
L
Th Tc
2 3 6 8 10 12.5 15 17 19 (min) 2 3 6 8 10 12.5 15 17 19 (min)
axis
isothermal flat surface
isotherm
al cur
ved
surfa
ce
r
q/qa
v
0 0.1 0.2 0.3 0.4 0.50
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
Kelkar et al.Present
Pr=10
Pr=0.1
Pr=1
θ (deg)
q/q a
v
0 10 20 30 40 50 60 70 80 900
0.3
0.6
0.9
1.2
1.5
Pr=10Pr=0.1
Pr=1
Kelkar et al.Present
��
����
L
H
adiabatic
Th Tc
air
x(m)
v(m
/s)
0 0.1 0.2 0.3 0.4 0.5-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
Exp. Cheesewright et al.Present k-ωmodelPresent zero-eq. model
T(oC)
y(m
)
30 40 50 60 70 80 900
0.5
1
1.5
2
2.5
Exp. Cheesewright et al.Calc. DavidsonPresuent k-ω modelPresent zero-eq. model
xxxxzzzz
yyyygggg
ϕ
oooo
x=L
T=Th
T=Tc
T=Th-(Th-Tc)x/L(four side walls)
Tc
Th
↓ g
0 1 2 3 4 5 6 7 8
θ=81.9oθ=4.6o θ=11.7o θ=23.4o θ=39.8o θ=58.5oθ=0o
ro
ri
MeasuredCalculated
2r/dV/
Ub
0 0.2 0.4 0.6 0.8 1
0.0
0.8
2r/d
U/U
b
0 0.2 0.4 0.6 0.8 1
1.0
1.5
