Gravity Currents Over Sills in Canyons:
2D LES:
Common parameters: Ra=2e9, Pr=1, L=5, H=1, K=1440 (80x18), LX1=7, DT=0.5e-7, SGS model B, c_s=0.05,
inlet bc
Varying parameters: Rrho: ambient stratification, Tfluc: inlet time dependence, h_max: sill height
Experiments over three sills with h_max/H=0.10:
Experiments over three sills with h_max/H=0.15:
| |
Tfluc=0e-4: |
Tfluc=1e-4: |
Tfluc=2e-4: |
| Rrho=0.0: |
th18-les |
- |
- |
Experiments over flat topography:
3D LES:
parameters: Ra=1e9, Pr=1, Lx=4, Lz=1, K=5376 (48x14x8), LX1=7 (1,161,216 pts), DT=0.5e-7, SGS model B, c_s=0.10, Rrho=0.07
th3d1-les: 3 sills, with ambient stratification overflow or internal waves