Kayıcı Teknelerde İleri Hızın Yan Ötelenme Kuvveti ve Savrulma Momentine Olan Etkisi

Abstract

Planing hulls, commonly used in many areas, have different hydrodynamic behavior than the displacement hulls, even in calm water. Therefore, this makes the calculation of the maneuvering parameters of these hulls appealing. In the present study, a planing hull's numerical static drift analyses are performed using the unsteady RANS approach to evaluate the sway force and yaw moment at different angles of attack and advance velocities. The results show that the sway force and yaw moment are considerably affected by the advance velocity change, resulting in a variation of hydrodynamic derivatives above 50%. Thus, the forward speed should be included in the calculations for the accurate prediction of hydrodynamic maneuvering derivatives of planing hulls, especially in pre-planning and planing regimes.