Influence of Inlet Duct Length on the Hydraulic Performance of the Waterjet Propulsion Device

Table 3

The uniformity of velocity distribution V_u and the weighted average angle θ vary with the length of the inlet duct.

Case	Speed distribution uniformity Vu (%)	Weighted average angle (°)
0.4L	60.09	77.97
0.6L	60.04	77.8
0.8L	60.22	78.81
1.0L	61.33	78.84
1.2L	65.66	78.61
1.4L	64.81	78.65