摘要
主要工作是螺旋桨滑流对机翼气动特性影响的非定常流体力学计算方法研究。几何模型借鉴国外某太阳能无人机,建立单螺旋桨计算模型,采用两叶螺旋桨。用ICEM网格软件生成具有两个计算域的高质量非结构数值计算网格,应用多参考系和滑移网格边界条件,对模型在低速情况下进行数值模拟。分析螺旋桨滑流的发展和机翼在滑流作用下的非定常气动特性,对比分析螺旋桨不同转速下滑流对机翼影响大小,计算结果表明本文采用的数值模拟方法能有效地应用于机翼在螺旋桨滑流作用下的流场求解,可以为工程应用提供重要的参考。
The unsteady computational method of wing aerodynamic characteristics in propeller slipstream is major objective of research.The establishment of single-propeller geometric model is referred to a Solar-powered UAV,and the propeller is a two-bladed design.High-quality unstructured numerical grid is generated by ICEM software with two computing domain,and the grid application compatible boundary conditions using sliding mesh method.The development of propeller slipstream and unsteady aerodynamic characteristics of wing in the propeller slipstream are analyzed.The results show that the numerical simulation method can be applied to the wing in the propeller slipstream efficiently,and has great engineering application value.
出处
《科学技术与工程》
2011年第14期3229-3235,共7页
Science Technology and Engineering
关键词
螺旋桨滑流
滑移网格
N-S方程
非定常数值模拟
气动特性
propeller slipstream sliding mesh method N-S equations unsteady CFD simulations aerodynamic characteristics
