Two Dimensional Simulation of Smart Submerge Hydrofoil Closed to theWater Free Surface and Compare with Conventional Hydrofoil

Using of smart materials in hydrofoils increases the efficiency of high-speed boats. The aim of this paper is development and simulation of flow around the smart hydrofoil and comparison of it with the conventional ones. Then, the effect of submerge distance (h/c), angle of flap (AOF) and Froude number (Fr) is studied. The free surface waves, generated by two types of hydrofoils, will be compared with together and the smart martial influence on the wavelength and amplitude is investigated for different submerge distance. To simulate the smart flap behavior, a parametric bending profile of a cantilever beam under a non-uniform load is considered so that it can simulate the smart martial treat very well. Moreover, a pressure-based implicit procedure is applied to solve the Navier-Stokes equations and Volume of Fluid (VOF) model is also utilized to simulate air and water. Phases. Results demonstrate that the smart hydrofoils increase the lift to drag ratio (L/D) when compares with the conventional hydrofoils; finally, they have a suitable efficieney against the conventional ones.