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Table 5 Case studies for the assessment of the solution’s sensitivity to grid resolution

From: Transforming typical hourly simulation weather data files to represent urban locations by using a 3D urban unit representation with micro-climate simulations

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