THE EXPERIMENTAL METHOD AND CFD STUDY OF THE BARE HULL FORM OF UNDERWATER VEHICLE AT NEAR SURFACE CONDITION

Hull form selection, resistance and powering are important in designing underwater vehicle. An vehicle bare hull is based on the five parameters due to interaction between propeller hull. When they running surface condition, there will be problems likely as vessel, but main of below waterline with low freeboard. The vehicles operating high speed at a Froude Number. Therefore, wave making component becomes resistance. model condition analyzed by using CFD tools. Friction calculated ITTC’57 correlation line. flow around ship’s complicated, so that experiments still most reliable data source ship determination. results. towing mechanism arrangement should considered model. designed for testing. This paper discusses method result test CFD. also makes comparison formation Towing tank various speeds. was tested Ship Model Tank Marine Hydrodynamics Centre, Myanmar Maritime University. analysis carried out results compared condition. three software packages XFLOW, XMESH XPAN used simulations. shows coefficient differences less staggered speed.