Table 1 Spatial discretization of the computational domain

Grid number

N _x

N _y

N _z

N_x__canyon

N_z__canyon

N__total

864

96

73

12

12

6,552,576

Mesh size

∆x

∆y

∆z__min

∆z__max

1/12

1/8

1/12

0.2515