FIG. 18.

The magnitude of the non-dimensional velocity [$u_{mag}={\left(u_x^2+u_y^2+u_z^2\right)}^{1/2}$] at the intersection of the mid-surface (x = 0) and z = 0 surface at t/T = 0.06 for 73 × 109 × 153 with $△\overline{t}=0.0125$, 108 × 164 × 228 with $△\overline{t}=0.008$, and 73 × 109 × 153 with $△\overline{t}=0.00625$ (the grid resolutions are for uniform mesh which contains an immersed body).