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

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

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FIGURES 135<br />

〈U〉<br />

(Uτ ) ss<br />

〈U〉<br />

(Uτ ) ss<br />

30<br />

20<br />

10<br />

phase angle = 0<br />

0<br />

0.00 0.20 0.40 0.60 0.80<br />

30<br />

20<br />

10<br />

y/δ<br />

phase angle = π<br />

2<br />

0<br />

0.00 0.20 0.40 0.60 0.80<br />

y/δ<br />

Low-Re k-ε<br />

Subgrid k-ε<br />

✄✂ ✁ DNS [29]<br />

〈U〉<br />

(Uτ ) ss<br />

〈U〉<br />

(Uτ ) ss<br />

30<br />

20<br />

10<br />

phase angle = π<br />

4<br />

0<br />

0.00 0.20 0.40 0.60 0.80<br />

30<br />

20<br />

10<br />

Subgrid k-ω<br />

k-ε log law<br />

0<br />

0.00 0.20 0.40 0.60 0.80<br />

y/δ<br />

phase angle = 3π<br />

4<br />

Figure 5.25: 〈U〉 vs y/δ snapshots through time (prescribed U) - part 1<br />

y/δ

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