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:
Tfluc=0e-4: Tfluc=1e-4: Tfluc=2e-4:
Rrho=0.0: th12-les th19-les th13-les
Rrho=0.1: th16-les - th17-les

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:
Tfluc=0e-4: Tfluc=1e-4: Tfluc=2e-4:
Rrho=0.0: th14-les th20-les th15-les

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
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