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Aerodynamic Shape Optimization using Continuum Shape Sensitivity Analysis

机译:使用连续体形状灵敏度分析的空气动力学形状优化

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The paper presents a local-form continuum sensitivity analysis approach to the incompressible Navier-Stokes equations. The Navier-Stokes equations are discretized using the Qi-Q Taylor-Hood elements which are the minimum order elements required for local-form sensitivity analysis without needing solution reconstruction. The method is used to calculate the solution and sensitivities of a benchmark problem and the results are verified. The sensitivity analysis results for local sensitivities exhibit second order convergence with mesh refinement. The material sensitivities on the other hand exhibit only first order convergence due to the first order convergence of the spatial gradients in the convective term. Finally the effect of mesh parameters on the sensitivity results indicates that the mesh adaptation for sensitivity analysis is different from that for flow analysis.
机译:本文介绍了不可压缩的Navier-Stokes方程的局部连续敏感性分析方法。使用QI-Q \ Taylor-罩元件离散化的Navier-Stokes方程,其是局部敏感性分析所需的最小订单元件而不需要解决方案重建。该方法用于计算基准问题的解决方案和敏感性,并且验证结果。局部敏感性的敏感性分析结果表现出二阶收敛性与网眼细化。另一方面的材料敏感性仅表现出由于对流术语中的空间梯度的第一阶收敛而展示了一阶收敛。最后,网格参数对灵敏度结果的影响表明,用于灵敏度分析的网格适应与流量分析不同。

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