The UMIST-N Near-Wall Treatment Applied to Periodic Channel Flow

FIGURES 130
τw
(τw) ss
τw
(τw) ss
3.0 3.0
2.5 2.5
2.0 2.0
1.5 1.5
1.0 1.0
0.5 0.5
0.0 0.0
-0.5 -0.5
-1.0 -1.0
-1.5 -1.5
-2.0 -2.0
0.0 0.5 1.0 1.5 2.0
a
period
3.0 3.0
2.5 2.5
2.0 2.0
1.5 1.5
1.0 1.0
0.5 0.5
0.0 0.0
-0.5 -0.5
-1.0 -1.0
-1.5 -1.5
-2.0 -2.0
0.0 0.5 1.0 1.5 2.0
a {
Low-Re k-ε
Subgrid k-ε
b{
✄✂ ✁ DNS τw [29] DNS
b
period
k-ε log law
Subgrid k-ε
Subgrid k-ω
∂〈P 〉
∂x [29]
( ∂〈P 〉
( ∂〈P 〉
∂x ) ss
∂x )
( ∂〈P 〉
( ∂〈P 〉
∂x ) ss
∂x )
Figure 5.20: Wall shear stress variation in the periodic bulk flow case
× 10 −1
× 10 −1