誤差函數擴散 的英文怎麼說

中文拼音 [chāhánshǔkuòsǎn]
誤差函數擴散 英文
error function diffusion
  • : Ⅰ名詞(錯誤) mistake; error Ⅱ動詞1 (弄錯) mistake; misunderstand 2 (耽誤) miss 3 (使受損害...
  • : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
  • : 名詞1. [書面語] (匣; 封套) case; envelope 2. (信件) letter 3. (姓氏) a surname
  • : 數副詞(屢次) frequently; repeatedly
  • : 動詞(擴大) expand; enlarge; extend
  • : 散動詞1. (由聚集而分離) break up; disperse 2. (散布) distribute; disseminate; give out 3. (排除) dispel; let out
  • 誤差 : error
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. The method is firstly applied to solve the linear convection - dominated diffusion problems and the optimal l2 - error estimates of the unknown function c and the vector flux p are gained

    此方法首先被用於求解線性對流問題,得到了關于未知c及伴隨p的最優l ~ 2估計。
  2. In chapter one, we propose a new mixed method called characteristics mixed finite element method for a convection - dominated diffusion problems with small parameter e : we handle the convection part whth backward difference scheme along the characteristics, obtain much smaller time - trunction errors and avoid numerical dispersion on the front of the peak curve of the flow : we use a lowest order mixed finite element method to deal with the diffusion part, so this scheme can approximate the unknow function and its following vector with high accuracy at the same time

    第一章中我們對小參對流占優問題提出了新的值方法? ?特徵混合有限元方法,即對方程的對流部分採用沿特徵線的後退分格式求解,以保證較小的截斷限並避免了在流動的鋒線前沿值彌現象的出現;對流動的部分採用最低次混合元方法求解,以保證格式對未知及伴隨向量的同時高精度逼近。由於該方法中檢驗可取分片常,此格式在某種意義上具有局部守恆性質。
  3. In this paper, we consider mixed finit element methods for the initial - boundary value problems of two order hyperbolic equations and linear integro - differential equations of parabolic type, obtain the error estimates of the discrete schemes for this two kinds of problems. in chapter one, we consider the expanded mixed finite element methods for the followling 2nd order hyperbolic problems this method expands the standard mixed formulation in the sense that three variable are explixitly treated : the scalar unknwon, its gradient and its flux

    本文討論了二階雙曲方程和線性拋物型積分微分方程方程初邊值問題的混合有限元方法,得到了這兩類問題混合有限元離格式的估計。第一章討論二階雙曲初邊值問題的展混合元方法。該方法能同時逼近未知、未知的梯度和流體的流量,較好的模擬了帶有混合型邊界條件的二階雙曲問題。
  4. The new method is a combination of characteristic approximation to handle the convection part, to ensure the high stability of the method in approximating the sharp fronts and reduce the numerical diffusion, a smaller time truncation is gained at the same time, and a mixed finite element spatial approximation to deal with the diffusion part, the sealer unknown and the adjoint vector function are approximated optimally and simultaneously

    此方法即為對方程的對流項沿流體流動的方向即特徵方向進行離,從而保證格式在流動鋒線前沿逼近的高穩定性,消除了值彌現象,並得到了較小的時間截斷;另一方面,對方程的項採用混合元離,可同時高精度逼近未知及其伴隨向量,理論分析表明,此方法是穩定的,具有最優的l ~ 2逼近精度。
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