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CFD – BASED STUDY ON GOLDSCHMIED PROPULSION CONCEPT APPLICATION FOR DRAG REDUCTION

机译:基于CFD的金石推进概念在减灾中的应用研究

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The propulsive concept of Goldschmied-Skaleski proposes simultaneously the dragreduction of an aerodynamic body and theincrease of propulsive efficiency through theingestion and control of the boundary layer. Inan effort to increase the technology readinesslevel of this concept, the authors apply it to theaerodynamic design of a main landing gearwheel fairing of a racer aircraft namedAnequim designed to be the fastest piston engineaircraft in the world. Over this test model, adesign of experiments methodology was usedwith almost 2,700 different geometries to studythe influence of specific design parameters overthe overall drag force. This study was carriedout using 2-D and 3-D CFD simulationsprovided by commercial software. The relevantdesign parameters were identified using acorrelation matrix of the 2-D results. Finally, inorder to verify the proposed methodology a 3-DCFD simulation was performed. The resultsshow a reduction on the drag force of the wheelfairing for an operational range of the suctionsystem and also an increase on the axial forcedue to the fan thrust.
机译:Goldschmied的推进概念- Skaleski同时提出阻力 减少空气动力车身和 通过以下方式提高推进效率 边界层的摄取和控制。在 努力提高技术准备度 在这个概念的层面上,作者将其应用于 主起落架的空气动力学设计 名为的竞赛飞机的轮罩。 Anequim被设计为最快的活塞发动机 世界上的飞机。在此测试模型中, 设计了实验方法 可以研究将近2700种不同的几何形状 特定设计参数对 整体阻力。这项研究进行了 使用2D和3D CFD模拟进行测试 由商业软件提供。相关的 设计参数使用 二维结果的相关矩阵。最后,在 为了验证所提出的方法是3-D的 进行了CFD模拟。结果 减少了车轮的拖曳力 抽气操作范围的整流罩 系统以及轴向力的增加 由于风扇的推力。

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