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Adaptive Computation of Aeroacoustic Sources for a Rudimentary Landing Gear Using Light hill's Analogy

机译:利用Light Hill的类比自适应计算基础起落架的航空声源

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We present the current status of a General Galerkin finite element method (G2) applied to computational aeroacoustics (CAA). In G2, no explicit subgrid model is used, and, instead, the computational mesh is adaptively refined with respect to an a posteriori error estimate of a quantity of interest. In this paper, we introduce a new refinement strategy based on Lighthill's acoustic analogy, which we believe is more suitable for CAA. Computational results suggest that the mesh obtained with the new strategy better captures turbulent flow sound generation throughout the domain.
机译:我们介绍了通用Galerkin有限元方法(G2)应用于计算航空声学(CAA)的当前状态。在G2中,不使用显式的子网格模型,而是根据感兴趣量的后验误差估计自适应地精炼计算网格。在本文中,我们介绍了一种基于Lighthill声学比喻的新细化策略,我们认为该策略更适合CAA。计算结果表明,使用新策略获得的网格更好地捕获了整个域中湍流声的产生。

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