高次アイソパラメトリック有限要素形状歪みの流動計算精度に与える影響

概要

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The finite-element method based on higher-order isoparametric elements is one of useful techniques for flow calculations in complicated geometries. This paper describes a study on change of solutions with geometric distortions of the elements in calculations of parall channel flow. The element distortion affects accuracy of numerical results and therefore it is important to know the relationship between the distortions and the accuracy. Experience of calculations in structural dynamics has given a permitted limit for the distortion. Numerical simulations were performed in Re=40 and 400. Changes of the solutions were 2% in velocity and 0.8% in pressure even for distortion over the permitted limit.
一般社団法人日本機械学会の論文
1995-08-25