CAJ | 학술논문

?以49.5?m金枪鱼延绳钓渔船为研究对象，为了得到具有较好阻力性能的球鼻艏，首先设计撞角型球鼻艏，通过CFD方法得到撞角型球鼻艏渔船的阻力性能并与模型试验结果进行比较，两者吻合较好；然后通过改变球艏的伸出长度、形心浸深和体积为该船设计水滴型和S-V上翘型球鼻艏，对水滴型和S-V上翘型球鼻艏形式的船体阻力性能进行数值模拟。通过比较三种不同球鼻艏形式下船体的阻力性能，结果显示：该型延绳钓渔船使用撞角型球鼻艏具有较好的减阻效果。
?이49.5?m금창어연승조어선위연구대상，위료득도구유교호조력성능적구비수，수선설계당각형구비수，통과CFD방법득도당각형구비수어선적조력성능병여모형시험결과진행비교，량자문합교호；연후통과개변구수적신출장도、형심침심화체적위해선설계수적형화S-V상교형구비수，대수적형화S-V상교형구비수형식적선체조력성능진행수치모의。통과비교삼충불동구비수형식하선체적조력성능，결과현시：해형연승조어선사용당각형구비수구유교호적감조효과。
The resistance performance of bulbous bow is studied for a 49.5m tuna longline ifshing boat. A embolon type bulbous bow is ifrstly designed and simulated by CFD for the resistance performance. The numerical results are in good agreement with the experimental results. Then, a water-drop type bulbous bow and S-V type bulbous bows are designed with variation of the extending length, the centroid depth and the volume of the bulbous bows. The resistance of the bulbous bows with three different types are numerically simulated and compared, respectively. The results show that the resistance of the longline ifshing vessels will be reduced with embolon type bulbous bow.