基于风洞试验的圆弧形硬帆最佳攻角

Best Angle of Attack of Circular-Arc Sails Determined by Wind Tunnel Tests

由于风帆在什么攻角下对船舶产生的推力最大,且对船舶稳性的影响最小是衡量风帆性能的重要因素,因此对最佳风帆攻角进行研究,使控制系统准确地控制风帆,从而使风帆实现最佳的节能减排效果。通过对5种具有优良空气动力性能的圆弧形薄翼硬帆模型进行风洞试验,得到一系列的帆性能参数。通过对这些参数进行分析,得到圆弧形薄翼风帆最佳攻角的规律及风帆最佳操纵曲线,可为风帆的控制提供参考。

The sails on board ship should generate maximum thrust and have minimal impact on stability of the ship under the best attack Angle. The study of the best angle of attack helps the control system to accurately control sails and make sails most effective in energy conservation and emissions reduction. The parameters of five different designs of circular-arc sails, whieh have excellent aerodynamic performances, are obtained through a series of wind tunnel tests. The best angle of attack and the curves of sail manipulation are determined based on test data. This study may help the design of the sail control.