The Generic Prismatic Planing Hull (GPPH) serves as a perfect validation benchmark. In this study we used the experimental data of calm water resistance of the GPPH to assess the accuracy of our approach. The study is performed for seven different speeds with Froude numbers ranging from 1.1 to 2.5. Total resistance, dynamic trim and sinkage, and wetted keel and chine lengths are compared to experimental data.

The standard Cloud Towing Tank procedure is employed to generate the grid and setup the simulations. All simulations are performed in model scale, to allow direct comparison against experimental data, without scaling the results. Comparison showed that total resistance exhibits up to 3.3 % error comparing to the experiment, where the trend of resistance is well captured. Trim and sinkage showed good agreement as well, as shown in the images below.

In addition to resistance and dynamic sinkage and trim, the geometry of the wetted surface of the hull's bottom is also compared to experimental data. The length of wetted keel and wetted chine is measured visually and compared. The comparison shows very good agreement between the two sets of results. 

Follow the link below for the full benchmark study with detailed discussion and data.

Download the full benchmark study here

Steer clear of sea trial failures.