The UMIST-N Near-Wall Treatment Applied to Periodic Channel Flow
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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CHAPTER 4. NUMERICAL IMPLEMENTATION 65<br />
In the discretised transport equations, under-relaxation is implemented by<br />
(AP ) ur = 1<br />
α AP<br />
(SU) ur = SU + (1 − α) AP φp<br />
(4.36)<br />
<strong>The</strong> under-relaxation fac<strong>to</strong>rs used in this thesis are shown in Tables 4.2 and<br />
4.3.<br />
Table 4.2: Under-relaxation fac<strong>to</strong>rs used in the main grid<br />
〈U〉 0.8<br />
k 0.5<br />
ε 1.0<br />
˜ε 1.0<br />
ω 1.0<br />
Table 4.3: Under-relaxation fac<strong>to</strong>rs used in the subgrid<br />
〈U〉 0.7<br />
k 0.7<br />
˜ε 0.7<br />
ω 0.7