山东大学学报(理学版)
山東大學學報(理學版)
산동대학학보(이학판)
JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE)
2015年
8期
78-89
,共12页
樊明智%王芬玲%石东洋
樊明智%王芬玲%石東洋
번명지%왕분령%석동양
广义神经传播方程%超逼近性和超收敛结果%新混合元%半离散和全离散格式
廣義神經傳播方程%超逼近性和超收斂結果%新混閤元%半離散和全離散格式
엄의신경전파방정%초핍근성화초수렴결과%신혼합원%반리산화전리산격식
the generalized nerve conductive equations%superclose properties and superconvergence results%new mixed element%semi-discrete and fully-discrete schemes
利用双线性元和 Nédélec's 元,对广义神经传播方程建立了最低阶自然满足 Brezzi-Babuka 条件的新混合元逼近格式。基于该混合元的高精度分析和插值后处理算子技术,在半离散格式下分别导出了原始变量的 H 1模及中间变量的 L2模的超逼近性质和整体超收敛结果。当 f(u)=f(X)时建立了一个具有二阶精度的全离散逼近格式,分别得到了原始变量的 H1模的超逼近性和中间变量的 L2模的最优误差估计。
利用雙線性元和 Nédélec's 元,對廣義神經傳播方程建立瞭最低階自然滿足 Brezzi-Babuka 條件的新混閤元逼近格式。基于該混閤元的高精度分析和插值後處理算子技術,在半離散格式下分彆導齣瞭原始變量的 H 1模及中間變量的 L2模的超逼近性質和整體超收斂結果。噹 f(u)=f(X)時建立瞭一箇具有二階精度的全離散逼近格式,分彆得到瞭原始變量的 H1模的超逼近性和中間變量的 L2模的最優誤差估計。
이용쌍선성원화 Nédélec's 원,대엄의신경전파방정건립료최저계자연만족 Brezzi-Babuka 조건적신혼합원핍근격식。기우해혼합원적고정도분석화삽치후처리산자기술,재반리산격식하분별도출료원시변량적 H 1모급중간변량적 L2모적초핍근성질화정체초수렴결과。당 f(u)=f(X)시건립료일개구유이계정도적전리산핍근격식,분별득도료원시변량적 H1모적초핍근성화중간변량적 L2모적최우오차고계。
A lowest order new mixed element approximate scheme with the bilinear element and Nédélecc's element for the generalized nerve conductive equations is proposed,which can satisfy Brezzi-Babuka condition automatically. Based on high accuracy analysis of the mixed element and interpolation post-processing technique,the superclose prop-erties and superconvergence results of original variable in H 1 -norm and intermediate variable in L2-norm are deduced separately for semi-discrete scheme.At the same time,a second order fully-discrete scheme when is f(u)equal to f(X) is established and the superclose properties and the optimal order error estimates of original variable in H1 -norm and in-termediate variable in L2-norm are separately derived.