DEVELOPMENT AND VALIDATION OF A DESIGN AND ANALYSIS PROCESS TO OPTIMISE HIGH-SPEED PLANNING MONO-HULLS

摘要

Hydrodynamic simulation is an increasingly useful tool to designers of high speed planning vessels, allowing designers to evaluate sea-keeping performance at an early stage in the design process, before costly physical testing using wave tanks and sea trials is performed. As a contributor to the ongoing CFMS Core Programme, Frazer-Nash have sought to improve the throughput of hydrodynamic simulation by integrating and automating the simulation process using extensively validated HydroDyna dynamic motion simulation software. This paper presents a novel approach to the design of high-speed planning hulls using a fully automated optimisation process to rapidly generate, simulate and evaluate a number of hullforms simultaneously using HydroDyna. Vessels have been scored based on measures of passenger comfort, vessel power requirement, and hull slamming pressures. The optimisation process generates an initial sample of designs which are evaluated and then used to build a representation of the design space using a kriging algorithm. The mapped design space is then searched for a global optimum design, which is in turn simulated and evaluated. The process is repeated until convergence to a global optimum is achieved. The optimisation process has been used to generate a single hullform optimised for rough water conditions. Results of an optimisation run are presented including a discussion of convergence time and parameter sensitivity.