stokes approximation 中文意思是什麼
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Superconvergence of a mixed finite element approximation for stokes problem
問題一種混合元近似的超收斂 -
In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation
本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。 -
The rsm approximation models can be efficiently used to reduce the number of exact cfd analysis, create smooth response functions and improve convergence of optimization algorithms. at the stage of rsm and sqp iterations, once the design cannot be improved based on rsm, exact analyses will be performed by 3d navier - stokes cfd
5 .在局部尋優階段，採用了全三維流場數值模擬程序對近似模型進行校正，用sqp方法對近似模型進行局部尋優，既保證了氣動性能分析的精度，又大大減少了實際數值模擬的總計算開銷。
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