【摘要】 加装风帆后的船舶在低速时的航行特性有别于无帆情形。为确保低速航行安全,基于MMG非线性运动方程,计算了有、无风帆情况下的船舶操纵可控区。运动方程中的船体水动力系数、舵模块参数等由经验公式得到,帆/船整体气动力系数由基于滑移网格方法的CFD手段获得。计算结果表明:不同帆攻角下的船舶自由操控区不同,通过合理的帆/舵联合操纵,可以扩大风帆辅助推进船舶低速航行的可自由操控区,增强其在风中的抗风能力。更多还原

【Abstract】 Ship’s sailing performance will be changed when sails are installed. In order to sail safely at slow speed, freely maneuverable range for a sail-assisted ship was presented under both with and no sail conditions based on the MMG nonlinear motion equations. Hull hydrodynamic coefficients and rudder module parameters were calculated by empirical formula, and wind force coefficients of sail/hull were predicted by CFD based on the sliding meshes. The result showed that freely maneuverable range varies with sail angles, and freely maneuverable range for a sail-assisted ship at slow speed can be enlarged through reasonably handling sail and rudder.更多还原