Performance Prediction of a Hard-Chine Planing Hull by Employing Different CFD Models

This paper presents CFD (Computational Fluid Dynamics) simulations of the performance a planing hull in calm-water condition, aiming to evaluate similarities and differences between results different models. The key these models are ways they use compute turbulent flow simulate motion vessel. vessel on water leads strong fluid motion, movement from its initial position can be relatively significant, which makes simulation problem challenging. Two frameworks including k-ε DES (Detached Eddy Simulation) methods employed model turbulence behavior air–water around boat. Vertical motions rigid solid body domain, eventually converge steady linear angular displacements, numerically modeled by using two approaches, morphing overset techniques. All performed with similar mesh structure allows us applied terms computation Through quantitative comparisons, technique has been seen result smaller errors prediction running trim angle at high speeds. Numerical observations suggest that modify accuracy angle, especially high-speeds. increase resistance high-speed operation, as well. better level is calculation eddies emerging downstream zone, not captured when framework employed. approach itself also prediction. method, however, overpredicts force. overprediction caused larger vorticity, computed direction waves, generated under bow Furthermore, observed hydrodynamic pressure stagnation line, linked greater predicted this approach. extra-damping second third crests transom waves it calculates stronger wake Overall, combination recommended used for modeling combined might slower computational time, but provides prediction, predict energy damping, developed surrounding water. Finally, present demonstrate achieved an used. attained future modifying such way vorticity overpredicted eddies, employed, properly.