Objectives The tunnel catamaran is a special type of planing craft with two planing bodies connected in the middle channel. The central channel is lifted by a cyclone which can lift the hull off the surface of the water to achieve a higher speed. It has good rapidity and can quickly enter a stable state during high-speed navigation. The parametric design and resistance performance estimation of a high-speed planing tunnel catamaran play important roles in the development and design of catamarans.
Methods The parameterized configuration of the hull is carried out by defining the main lines of the planing tunnel catamaran hull with a clamped B-spline curve. The influence of the channel size and deadrise angle of the catamaran on its hull resistance performance is then studied by setting multiple hull designs in STAR-CCM+.
Results An optimized hull design is obtained with 17.3% resistance reduction compared with the original.
Conclusions Compared with a planing hull of the same scale and displacement, this study proves that a high-speed planing tunnel catamaran has superior sailing performance under medium and high-speed working conditions.
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