基于CFD技术的螺旋桨气动特性研究  

Aerodynamic performance research of propellers based on CFD technology

作　　者：许建华[1] 宋文萍[1] 韩忠华[1] 杨旭东[1] 

机构地区：[1]西北工业大学航空学院翼型/叶栅空气动力学科技重点实验室,西安710072

出　　处：《航空动力学报》2010年第5期1103-1109,共7页Journal of Aerospace Power

基　　金：国家自然科学基金(90605004)

摘　　要：通过求解绝对坐标系下的雷诺平均Navier-Stokes方程数值模拟螺旋桨侧流黏性绕流,计算螺旋桨非定常气动特性.为了保证时间精度和提高计算效率,采用含牛顿型LU-SGS(lower-upper symmetric-Gauss-Seidel)子迭代的全隐式双时间法并引入多重网格技术.为了描述桨叶的相对运动,采用运动嵌套网格技术.对于轴流状态,计算结果与实验值吻合良好;对于侧流状态,与工程算法1P(once-per-revolution)载荷法进行了比较,验证了方法的有效性.应用该方法计算螺旋桨在不同来流偏角下的周期性气动特性,可有效地用于螺旋桨的设计.Unsteady compressible Reynolds-averaged Navier-Stokes equations in absolute coordinate system were solved to simulate the flow around propeller for yawing-configurations. A moving chimera-grid methodology combined with multigrid scheme and a fully implicit dual-time stepping method for simulating the viscous flows over propellers were presented. For zero-yaw configurations,the numerical results agreed well with the experimental data; and for yawing configurations,the results were compared with 1P （once-per-revolution） method. Both cases validate the method. The periodical characteristics of propeller performance at different yaw angles provide a guideline for propeller design.

关 键 词：螺旋桨 侧流状态 NAVIER-STOKES方程 运动嵌套网格 多重网格方法 

分 类 号：V211.44[航空宇航科学与技术—航空宇航推进理论与工程]