Numerical analysis of self-propulsion of planing hull by using virtual Disk Method

In recent years, development of computational Fluid Dynamic (CFD) has facilitated the study of hydrodynamic behavior of high speed boat in water surface. Therefore, many studies are done by using numerical method with less time and cost. In this study, a planing hull (C model) have been simulated in calm water and validated against the experimental results. After ensuring the solution accuracy, numerical setups have been used to simulate a tunneled planing hull in calm water. Again, the results of tunneled planing hull in calm water have been validated against the experiment. Then two virtual disks have been added to C hull bottom and selfpropulsion results have been validate against the numerical data which is presented by pervious researchers. Then, self- propulsion of tunneled planing hull is presented at two different virtual disc location, by adding similar disc to tunneled hull bottom. So, the effects of propeller longitudinal location on trim angle, trust deduction factor, and dynamic pressure have been presented.