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流体力学拉氏程序收敛性及数值计算不确定度初探 被引量:6
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作者 刘全 王瑞利 +1 位作者 林忠 刘希强 《计算物理》 CSCD 北大核心 2013年第3期346-352,共7页
将欧氏(Eulerian)数值模拟不确定度分析的基本概念和方法引进拉氏(Lagrangian)计算中,包括渐近收敛阶、渐近收敛域、网格收敛指标(Grid convergence index,GCI)等.给出GCI方法刻画数值计算不确定度的具体步骤.并应用于N-R格式,验证了方... 将欧氏(Eulerian)数值模拟不确定度分析的基本概念和方法引进拉氏(Lagrangian)计算中,包括渐近收敛阶、渐近收敛域、网格收敛指标(Grid convergence index,GCI)等.给出GCI方法刻画数值计算不确定度的具体步骤.并应用于N-R格式,验证了方法的有效性. 展开更多
关键词 流体力学拉氏计算 渐近收敛性分析 网格收敛指标
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A REMARK ON FORMAL MODELS FOR NONLINEARLY ELASTIC MEMBRANE SHELLS
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作者 C. COLLARD Laboratoire d’Analyse Numerique, Tour n°55, Universite Pierre et Marie Curie, 4, place Jussieu, 75005 Paris, France. Laboratoire de Mathematiques Appliquees au Calcul Scientifique, Universite de Valenciennes et du Hainaut-Cambresis, Le Mont H 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2001年第3期307-324,共18页
This paper gives all the two-dimensional membrane models obtained from formal asymptotic analysis of the three-dimensional geometrically exact nonlinear model of a thin elastic shell made with a Saint Venant-Kirchhoff... This paper gives all the two-dimensional membrane models obtained from formal asymptotic analysis of the three-dimensional geometrically exact nonlinear model of a thin elastic shell made with a Saint Venant-Kirchhoff material. Therefore, the other models can be quoted as flexural nonlinear ones. The author also gives the formal equations solved by the associated stress tensor and points out that only one of those models leads, by linearization, to the "classical" linear limiting membrane model, whose justification has already been established by a convergence theorem. 展开更多
关键词 Nonlinear elastic shell Convergence theorem Asymptotic analysis
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