摘要
为探究摆线推进器系柱工况时在不同偏心点时的水动力性能以及流场分布情况,使用NACA0012建立摆线推进器,运用计算流体力学(CFD)技术对其在系柱工况下不同偏心点的水动力性能进行模拟。使用RANS方程计算流场扰动,应用重叠网格技术进行网格划分,模拟推进器的转动;将使用该方法的典型工况结果与文献中的结果进行对比,验证所使用方法。基于上述计算方案,得到了推进器在不同偏心点下的推力系数曲线,流场与涡量场分布。研究结果表明,摆线推进器产生的推力大小方向随着偏心点的位置而改变,脱落涡与叶片间的相互作用是引起推力波动的主要原因。
In order to explore the hydrodynamic performance and flow field distribution of cycloidal propeller at different eccentric points under the working condition of tie column of cycloidal propeller,NACA0012 was used to establish the cycloidal propeller,and computational fluid dynamics(CFD)technology was applied to simulate the hydrodynamic performance of cycloidal propeller at different eccentric points under the condition of tie column.The RANS equation is used to calculate the flow field disturbance,and the overlapping grid technology is applied for grid division and to simulate the rotation of the propeller.The results of typical working conditions that have used this method are compared with those in the literatures to verify this method.Based on the above calculation scheme,the thrust coefficient curve,flow field and vorticity field distribution of the propeller at different eccentric points are obtained.The results show that the thrust direction of cycloidal thruster varies with the position of eccentric point,and the interaction between shedding vortex and blade is the main cause of thrust fluctuation.
作者
胡健
刘贵申
于凯
李应宏
宁小深
HU Jian;LIU Guishen;YU Kai;LI Yinghong;NING Xiaoshen(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《应用科技》
CAS
2021年第5期1-6,共6页
Applied Science and Technology
基金
国家自然科学基金项目(520711054,51679045,51579052)
中央高校基本科研业务费项目(3072020CFT0103)
装备预研基金项目(61402100201,61402070304)。
关键词
摆线推进
偏心点
计算流体力学
重叠网格
系柱工况
推力系数
流场
涡脱落
收敛性分析
cycloidal propulsion
eccentric point
CFD
overlapping grid
tie column working condition
thrust coefficient
flow field
vortex shedding
convergence analysis
