【作者】 惠贤；

【导师】 昂海松；

【作者基本信息】 南京航空航天大学 ， 飞行器设计， 2011， 硕士

【摘要】 伴随着航空航天技术的进步,计算流体力学(CFD)技术发展迅速,并在飞机设计领域得到广泛应用,成为飞机空气动力设计过程中一种崭新的设计手段。CFD技术目前已经成为和风洞试验、飞行试验相辅相成的三大手段之一,广泛运用于各种飞行器设计之中。本文以具“流线型”特点的大型客机B787为研究对象,依据基于多角度图片重建三维外形的理论方法,对其进行三维重建,为了分析B787曲线后缘机翼设计的特点,本文基于B787三维模型设计了一个相应的折线后缘机翼的飞机三维模型。对以上两种模型使用计算流体力学方法进行数值模拟,对比分析两者之间由于流线型机翼和折线后缘机翼差别而产生的气动性能差异,并揭示了之所以产生这些差异的气动机理,从而为类似流线型飞机设计提供参考。在航空工业技术已经步入科学、理性的发展轨道的中国,大型客机项目因其对众多相关产业的促进性、对国家综合实力的带动性强,使得我国的航空工业迎来了新的发展机遇。因此对国外经典大型客机进行三维重建,研究其气动性能优势,并分析其机理,是十分具有研究价值的课题。更多还原

【Abstract】 In decades, with the dramatic development of aeronautics and astronautics, CFD (Computational Fluid Dynamic) is widely used in the aerodynamic design of aircraft due to the efficiency and applicability. CFD as well as the wind tunnel, and the flight-test, becomes one of the most three significant methods in the aircraft design.This paper presented the 3-D model of Boeing 787 with outstanding streamed characteristic by utilizing the multi-angle reconstruction theory, a straight trailing-edge wing model was also designed based on the original model of Boeing 787 for the analysis of the streamed wing characteristic. Numerical simulation was employed in the two models above; the mechanism of the different flow behaviors of the two models can be analyzed by CFD. The study aimed to provide the valuable reference to the practical engineering. Increasingly, the Chinese government and industry organization investigate plenty of funds to the aeronautic industry especially the large civil aircraft which leads a precious opportunity to promote the national power. Therefore, through the 3-D reconstruction and aerodynamic analysis to study the mechanism of the dominate points of the classical large civil aircraft in the world is of great value.更多还原