Page 261 - Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors

232
in
Achieved
achieved
588.95
179.99
180.04
394.65
180.09
Re τ
numbers
t +
10,800
24,300
11,800
21,600
Aver.
7900
time
Reynolds
friction
0.0195
0.0158
0.027
0.027
0.027
Δt +
and
DNS,
5.89
4.85
5.89
4.52
5.89
Δz +
of
times
0.054–4.42
0.054–4.42
0.044–7.24
0.054–4.42
0.03–4.85
averaging
Δy +
step, Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors
time Δx + 17.7 17.7 17.7 9.69 9.65
grid,
domain, N z 128 384 768 256 384
computational Mesh × N y × N x 129 128 129 384 129 768 257 256 257 384
DNS, L z 4π/3 4π 8π
various × L y 2 2 2 8π 2 8π 2
of 0.01 Domain × L x 4π 12π 24π 2π 2π
Details ¼ Pr
6.1.1.2 at large” 395 590
Table simulations DNS “Normal” “Large” “Very ¼ Re τ ¼ Re τ