一种船舶操纵水动力导数的计算方法

以船舶操纵性预报为研究背景，针对某一民用打捞船型，基于CFD方法，借助STAR－CCM＋平台，运用RANS方程及VOF算法，对船模进行数值模拟PMM试验，考虑航行中自由液面兴波和船模姿态变化，设计了船模按纯横荡运动及某固定频率下艏摇运动的船舶操纵水动力导数求解方法，并以采用回归方程求得的结果作为依据与数值计算结果相印证，表明所求水动力导数的有效性以及求解方法的可行性。

Calculation Method of Hydrodynamic Derivatives Related to Ship Maneuvering

Taking the ship maneuverability prediction as the research background, hydrodynamic derivatives related ship maneuvering were analyzed by CFD method for a certain civilian salvage ship,with STAR-CCM+software platform,using RANS equations and VOF algorithm,and numerical simulation was carried out on the model PMM test,considering the free liquid surface and the attitude of the model change in the process of oblique towing,and the maneuverability hydrodynamic derivative solving methods were designed according to the swaying motions and yawing motions of stationary oscillation modes,and the results of numerical calculation was compared with the results by regression equation,which confirms the effectiveness of the result to solve the hydrodynamic derivatives and the feasibility of solving method.