搜索结果: 1-9 共查到“力学 Lagrangian”相关记录9条 . 查询时间(0.09 秒)
Lagrangian Analysis and Prediction of Coastal and Ocean Dynamics
Coastal and Ocean Dynamics Lagrangian Analysis
2015/7/20
During a colloquium on Lagrangian dynamics in Liège, Belgium, in 1999, several participants discussed convening a meeting devoted to Lagrangian studies in the ocean and atmosphere. The European Scienc...
Lagrangian formulation of turbulent premixed combustion
Lagrangian formulation turbulent premixed
2011/9/15
The Lagrangian point of view is adopted to study turbulent premixed combustion. The evolution of the volume fraction of combustion products is established by the Reynolds transport theorem. It emerges...
Transport Induced by Mean-Eddy Interaction: I. Theory, and Relation to Lagrangian Lobe Dynamics
Eulerian Transport Lagrangian Transport Mean-Eddy Interaction Dynamical Systems Approach Wind-Driven Ocean Circulation
2011/8/11
Abstract: In this paper we develop a method for the estimation of {\bf T}ransport {\bf I}nduced by the {\bf M}ean-{\bf E}ddy interaction (TIME) in two-dimensional unsteady flows. The method is built o...
Ghost-Fluid Eulerian-Lagrangian方法及其应用
level set GEL算法 流固耦合 爆炸容器
2010/12/21
考察了将独立的Euler程序和Lagrange程序通过Ghost Fluid方法结合起来以处理流固耦合问题的算法。在Euler计算步中，采用基于物质界面建立的Level set函数对被Lagrange域覆盖的Euler网格上的物理量进行外插，同时确保界面两侧压力和法向速度连续；而在Lagrange计算步中，根据界面所在Euler网格压力确定界面各个节点的受力情况，从而确定Lagrange单元的运动...
基于level set的Eulerian-Lagrangian耦合方法及其应用
大变形流体力学问题 多介质 Eulerian-Lagrangian耦合方法 水平集方法 近似Riemann解
2014/3/10
提出了一种基于水平集的Eulerian-Lagrangian耦合方法，其中Lagrangian方法采 用相容显式有限元拉氏方法，Eulerian方法采用基于近似Riemann解的有限体 积Eulerian方法，多介质界面处理采用新的水平集和Ghost方法计算. 给出了若干 数值算例，包括激波管问题以及金属和气体的运动界面及其大变形问题，并分别与 精确解和相容显式有限元拉氏方法的计算结果进行了对比....
Non-Linear Dynamic Analysis of Arch Dams: Eulerian and Lagrangian Solutions
Fluid-structure interaction Eulerian approach Lagrangian approach Drucker-Prager yield criterion
2009/10/13
In this study, Eulerian and Lagrangian finite element formulations are given for the dynamic interaction problem of a fluid-structure system. Non-linear dynamic analyses of Karakaya arch dam were perf...
分区Lagrangian涡方法及瞬时起动圆柱初期流动的模拟
Lagrangian涡方法 分区处理 分离流
2007/7/28
摘要本文提出一种分区Lagrangian涡方法:将附着流动和分离流动分开处理,在附着区解边界层方层,只在分离区用涡方法解N-S方程。由于将尺度不同的区域分开了,求解分离区流动的涡方法中,每一时间步上物面引出的涡数在较小程度上依赖于Re数。这样,求解高Re数流动时,流场内的涡数,因而计算机内存和时间得以大大减小。用该方法计算了瞬时起动圆柱的初期流动,与实验结果比较相符很好。
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A Lagrangian for the large deflections of a rhombic plate
the large deflections rhombic plate
2010/3/15
A Lagrangian for the large deflections of a rhombic plate.
An Eulerian-Lagrangian Approach for Incompressible Fluids: Local Theory
Euler equations blow up
2014/4/4
We study a formulation of the incompressible Euler equations in terms of the inverse Lagrangian map. In this formulation the equations become a rst order advective nonlinear system of partial di erent...