ABSTRACT

The influence of the powered effect on the aerodynamic performance of the blended-wing-body (BWB) takeoff configuration is analysed in this study by solving the three-dimensional Reynolds-averaged Navier–Stokes equation on a multiblock structured grid. The powered effect on the aerodynamic performance of the BWB300 configuration was investigated with through-flow nacelle (TFN) and powered nacelle (PN) using this method. The results showed that although the influence of the powered effect caused a slight change in the aerodynamic performance of the BWB takeoff configuration, it did not change the development trend of the aerodynamic performance of the BWB takeoff configuration. Therefore, the TFN model can be used to obtain the general development trend of the aerodynamic performance of the BWB takeoff configuration in the early stages of the BWB design. However, when more accurate aerodynamic values are required, the powered effect should be considered.

摘要

本研究通过在多块结构网格上求解三维雷诺平均纳维-斯托克斯方程，分析了动力效应对翼身融合（BWB）起飞构型气动性能的影响。使用这种方法，通过通流式短舱 (TFN) 和动力短舱 (PN) 研究了动力对 BWB300 配置空气动力学性能的影响。结果表明，虽然动力效应的影响导致BWB起飞构型气动性能略有变化，但没有改变BWB起飞构型气动性能的发展趋势。所以，TFN模型可用于在BWB设计初期获取BWB起飞构型气动性能的总体发展趋势。然而，当需要更准确的空气动力学值时，应考虑动力效应。