Research Article

Experimental and Numerical Investigation of Stepped Planing Hulls in Finding an Optimized Step Location and Analysis of Its Porpoising Phenomenon

Table 16

Computed resistance, trim, and heave for different longitudinal locations of step at three different speeds.

CaseDistance of transom (mm)8 m/s9 m/s10 m/s
RTrim (deg)Z/V0.33RTrim (deg)Z/V0.33RTrim (deg)Z/V0.33

1500190.16164.50.1910.16523.80.1963PPP
2620230.161164.50.1890.16523.80.196PPP
3670250.161164.30.1850.16363.780.19410.1723.550.20
4720270.161164.090.1780.16833.620.1910.1743.190.19
5770290.165940.1760.16683.50.1890.17683.10.194
6820310.16693.80.1710.16833.40.1860.1802.80.191
7870330.16733.780.1690.16833.30.1830.18262.60.185
8970370.16803.70.1640.16833.20.1800.18842.60.182
91120420.17323.50.1600.1773.160.1770.20392.50.18
101320500.18133.50.1510.1912.80.1640.2802.20.169