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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 main work is unsteady hydrodynamics calculation of propeller slippery flow on the aerodynamic characteristics of the wing. Geometric models learn from a solar unmanned aircraft abroad, the establishment of a single propeller calculation model, the use of two-blade propeller. The high-quality unstructured numerical meshes with two computational domains were generated by ICEM grid software. The multi-reference system and the boundary conditions of sliding mesh were used to simulate the model at low speed. The development of propeller slipstream and the unsteady aerodynamic characteristics of the wing under the slipstream are analyzed. The effect of slipstream flow on the wing at different speeds is compared and analyzed. The numerical results show that the numerical simulation method applied in this paper can be effectively applied to the wing Solving the flow field under the effect of propeller slipstream can provide important reference for engineering application.