third-order accuracy 中文意思是什麼

third-order accuracy 解釋
三階精度
  • third : n 1 〈the third〉第三。2 第三者〈指人〉。3 (時間或角度的)一秒的六十分之一。4 〈the third〉(某...
  • order : n 1 次序,順序;整齊;(社會)秩序,治安;狀況,常態;健康狀態;條理;會場秩序;議事程序,日程;...
  • accuracy : n. 正確,準確(度);精確。 firing accuracy 命中率。 with accuracy 正確地。
  1. We expand the eigenvalue of possion equation using wilson nonconforming element. by the formulation of the error expanition, we can not conclude whether it is a upper bound or a lowr bound. but we guess it is a lower bound, and by two numerical example, we find thatwe are right. we also extraplate the error expansion and enhance the accuracy of the eigenvalue from second order to third order

    通過數值算例,計算方行與l行區域上的poisson方程的近似特徵值,並對數據進行分析,驗證了我們的推測是正確的,然後通過對誤差展開式外推,收斂階數可以從二階提高到三階,得到了高精度的解。
  2. A semi - discrete form of our scheme is also presented. this new reconstruction is a third order accuracy in smooth regions and non - oscillations at cell interfaces. our scheme enjoys the main advantage of the central schemes - simplicity, namely it does not employ riemann solvers and hence the intricate and time - consuming characteristic decomposition are avoided

    本文針對一維雙曲型守恆律的初值問題,研究了二階和三階中心差分格式,提出了一種改進的三階中心差分格式及其半離散形式,主要是引入了一種新的重構,並證明了這種重構在光滑區域具有三階精度且在網格邊界無振蕩,所提的格式保持了中心差分格式簡單的優點,不需要求解黎曼問題,避免了復雜且耗時的特徵分解過程。
分享友人