期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
一种求解产品开发耦合任务依赖度的方法 被引量:3
1
作者 赵韩 武照云 +1 位作者 宋晖 邰丽君 《中国机械工程》 EI CAS CSCD 北大核心 2009年第7期788-794,共7页
针对目前产品开发耦合任务依赖度求解方法存在的不足,深入分析了任务间信息依赖度的度量指标(可变度与敏感度)之间的本质联系,提出了信息关联对及关联度的概念。运用模糊层次分析法中的两两比较技术与群决策法相结合来评定关联度大小,... 针对目前产品开发耦合任务依赖度求解方法存在的不足,深入分析了任务间信息依赖度的度量指标(可变度与敏感度)之间的本质联系,提出了信息关联对及关联度的概念。运用模糊层次分析法中的两两比较技术与群决策法相结合来评定关联度大小,提出了由关联度构造可变度矩阵与敏感度矩阵的方法。结合指标权重关系函数,提出信息依赖度的计算方法。最后,给出改进的割裂准则与割裂算法流程,并通过一个实例证明了提出方法的有效性和实用性。 展开更多
关键词 设计结构矩阵 耦合任务集 割裂算法 信息依赖度
下载PDF
Characteristic-based operator-splitting finite element method for Navier-Stokes equations 被引量:13
2
作者 WANG DaGuo WANG HaiJiao +1 位作者 XIONG JuHua THAM L G 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第8期2157-2166,共10页
A new finite element method, which is the characteristic-based operator-splitting (CBOS) algorithm, is developed to solve Navier-Stokes (N-S) equations. In each time step, the equations are split into the diffusive pa... A new finite element method, which is the characteristic-based operator-splitting (CBOS) algorithm, is developed to solve Navier-Stokes (N-S) equations. In each time step, the equations are split into the diffusive part and the convective part by adopting the operator-splitting algorithm. For the diffusive part, the temporal discretization is performed by the backward difference method which yields an implicit scheme and the spatial discretization is performed by the standard Galerkin method. The convective part can be discretized using the characteristic Galerkin method and solved explicitly. The driven square flow and backward-facing step flow are conducted to validate the model. It is shown that the numerical results agree well with the standard solutions or existing experimental data, and the present model has high accuracy and good stability. It provides a prospective research method for solving N-S equations. 展开更多
关键词 N-S equations CBOS algorithm finite element method
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部