CFD 3D Modeling of Hydrofoils NACA 0009, Eppler 838 and Gottingen 11Kfor Estimation Comparison and of Hydrodynamic in Heave Oscilating Motion

Hydrofoils dynamics in deep waters is important. With the coefficients can be dynamic equations of motion of the hydrofoils and influencing factors of instability knowing it. In this article hydrodynamic lift and drag coefficients oscillating motion heave three hydrofoil naca 0009, Eppler 838 and Gottingen 11k using CFD at different frequencies were calculated and compared. Determining the hydrodynamic coefficients to the experimental method is expensive, and requires careful laboratory equipment, The exploitation of these coefficients to numerical methods and create virtual laboratories can be useful. The results show that the majority is independent of frequency coefficients, especially at high frequencies.