Table 5 Case studies for the assessment of the solution’s sensitivity to grid resolution
Case | Horizontal grid resolution (dx,dy) [m] | Vertical grid resolution (dz) [m] | Computational domain dimensions (x,y,z) [grid cells] (+no of nesting grids) | Coarsening ratio r i,i + 1 |
|---|---|---|---|---|
Case 1 | (3, 3) | First 5 grid cells’ height: 0.5 m, from 2.25 m to the top of the 3D domain: dzn = 1.18 × dzn-1 | 207 × 207 × 28 (+6) | n.a. |
Case 2 | (6, 6) | Same as Case 1 | 104 × 104 × 28 (+5) | r 1,2 = 2.0 |
Case 3 | (8, 8) | Same as Case 1 | 72 × 72 × 28 (+4) | r 2,3 = 1.3 |