Figure 5: Distribution of time-averaged flow velocity at five cross sections which are set according to the reference section (x0).

Figure 5: Distribution of time-averaged flow velocity at five cross sections which are set according to the reference section (x0). The
reference cross section x0 is located at the downstream end of the keystone (KS). The five sections are located at 18 cm and 6 cm
upstream of the reference section (x0-18 and x0-6), and 2 cm, 15 cm and 40 cm downstream of the reference section (x0+2, x0+15,
x0+40). The spacing for X, Y, and Z axes are all 10 cm in the plots.