Application of a Navier-Stokes Solver to the Study of Open Rotor Aerodynamics
Application of a Navier-Stokes Solver to the Study of Open Rotor Aerodynamics
复制标题
纳维-斯托克斯求解器在开式转子空气动力学研究中的应用
DOI：
10.1115/gt2009-59332
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
C. Hall
中科院分区：
文献类型：
--
作者：
Alexios Zachariadis;C. Hall
本文建立了一种经过验证的开放式旋翼外形计算方法，可作为进一步研究开放式旋翼空气动力学和设计的基础。在将计算流体力学应用于开放式转子发动机时遇到的许多困难是由于移除了传统航空发动机叶轮机械中存在的机壳。在这项工作中，一种先进的三维Navier-Stokes求解器被应用于开式转子。研究了精确捕捉空气动力学所需的方法，特别注意了网格结构和边界条件的规定。讨论了一种新的三步网格划分策略和最合适的远场边界条件。提出了一种控制体积分析方法，用于对旋翼性能的数值结果进行后处理。在巡航和起飞两种操作条件下，都展示了求解器的能力和应用的方法。计算结果与实验测量结果的比较表明，无论是数据趋势还是大小都符合得很好。
This paper establishes a proven computational approach for open rotor configurations that can be used as a basis for further studies involving open rotor aerodynamics and design. Many of the difficulties encountered in the application of computational fluid dynamics to an open rotor engine arise due to the removal of the casing that is present in conventional aeroengine turbomachinery. In this work, an advanced three-dimensional Navier-Stokes solver is applied to the open rotor. The approach needed to accurately capture the aerodynamics is investigated with particular attention to the mesh configuration and the specification of boundary conditions. A new three-step meshing strategy for generating the mesh and the most suitable type of far-field boundary condition are discussed. A control volume analysis approach is proposed for post-processing the numerical results for rotor performance. The capabilities of the solver and the applied methodology are demonstrated at both cruise and take-off operating conditions. The comparison of computational results with experimental measurements shows good agreement for both data trend and magnitudes.© 2009 ASME