CAJ | 학술논문

应用双向流固耦合方法，研究了桨叶变形对螺旋桨桨叶表面压力、周围流场及敞水性能的影响，分析了438X系列螺旋桨变形前、后桨叶表面的压力分布以及螺旋桨周围流场的变化，对比了桨叶变形前后的螺旋桨推力系数和扭矩系数。结果表明：桨叶的变形改变了桨叶表面的压力分布并引起螺旋桨周围流场的变化，桨叶变形前、后的推力系数最大相差9．3％，扭矩系数最大相差8．1％，桨叶变形引起的螺旋桨敞水性能的改变不可忽略，不同几何形状螺旋桨变形前、后敞水性能的变化也不尽相同。该研究结果可为新型易变形材料螺旋桨的性能预测、设计提供指导。
응용쌍향류고우합방법，연구료장협변형대라선장장협표면압력、주위류장급창수성능적영향，분석료438X계렬라선장변형전、후장협표면적압력분포이급라선장주위류장적변화，대비료장협변형전후적라선장추력계수화뉴구계수。결과표명：장협적변형개변료장협표면적압력분포병인기라선장주위류장적변화，장협변형전、후적추력계수최대상차9．3％，뉴구계수최대상차8．1％，장협변형인기적라선장창수성능적개변불가홀략，불동궤하형상라선장변형전、후창수성능적변화야불진상동。해연구결과가위신형역변형재료라선장적성능예측、설계제공지도。
The two-way fluid-structure interaction(FSI) method is used to study the effect of blade de-formation on the pressure distribution of the propeller blade ,the flow fields and open-water perfor-mance and analyze the surface pressure distributions of propeller blade series (4381 ,4382 and 4383) and the flow fields of the deformed and underformed blade configuration .T he changes in thrust coef-fient and torque coefficient before and after the blade deformation are contrasted .The results show that the deformed blade results in the change of the blade surface pressure coefficient and flow field . Compared with the results of the undeformed configuration blade ,the maximum variations in thrust coefficient and toque coefficient for the deformed configuration are 9 .3% and 8 .1% respectively .The effect of the blade deformation on the open-water performance of flexible marine propellers can not be ingnored .The reasearch can provide reference for the performance prediction and design of marine propellers w hich can be made of flexible materials .