Resistance Performance Research Of Hybrid Hydrofoil Small Water Area Twin Hull

The high-performance ship complies with the trend of the development of the shipbuilding industry in the world today,for its outstanding sailing performance,strong carrying capacity,comfort and economy,it‘s favored by the research institutions around the world.In this thesis I am making a computational fluid dynamics(CFD)simulation of a HYSWATH(Hydrofoil Small Waterplane Area Twin Hull)vessel by using the CFD tool STAR-CCM+.Since I did not have any prior experience in CFD,a substantial part of the thesis is dedicated to theory in CFD.This thesis employs Star-CCM+ calculation software to study the influence of gravity center and demi hull spacing on the resistance performance of HYSWATH.Using a Hydrofoil Water Area Twin Ship with the displacement of 1000 T as a model,the research studies the influence of gravity center on the resistance performance at different speeds.The research is of great importance for improving the resistance performance of hybrid hull ships.HYSWATH is a new type hybrid vessel with high speed.It has both advantages of small waterplane area vessel and hybrid vessel.In chapter five which studies the resistance property of HYSWATH by adopting vessel model resistance experiment and compares the data of model experiment with the result calculated by Computational Fluid Dynamics Software--Star-CCM+ to validate the accuracy of numerical computation method and to prepare for future study of effect of vessel form parameters on vessel resistance is the main part of this thesis.Based on the model experiment,the chapter carries out the numerical stimulation of viscous flow of HYSWATH by applying Star-CCM+ and obtains the motion attitude and resistance changing situation of the vessel,and compares them with experiment data.The result shows that using this method can accurately calculate the resistance and motion attitude of HYSWATH.