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Free surface fluid flow analysis by Lagrangian finite element method;

带自由面流体运动的拉格朗日有限元分析

A new model was created by combination of a chemical model for the gas phase chemistry of the atmospheric boundary layer with a lagrangian model for the long-range transport of air pollutants.

建立了一个将空气污染物远距离输送和大气边界层内气相化学反应模式相结合的拉格朗日模式,并应用于华南的酸雨研究。

The Lagrangian,Eulerian and Arbitrary Lagrangian-Eulerian descriptions are discussed for finite element method in this paper.

对拉格朗日、欧拉和任意拉格朗日-欧拉三种描述方法进行了分析,为了便于理解给出了三种描述的参考构形和参考坐标系,在参考坐标系下根据物质导数的定义分别得到相应的速度和加速度,并进行比较,将三种描述方法的区别列于表中,清晰地阐述了三种描述之间的相互关系, 并进行了有限元分析。

By using Lagrange formulations,the solution of transient in nonlinear serial RLC circuits was obtained and analyzed to find their some general features.

应用拉格朗日方程对非线性RLC串联电路的暂态过程进行了求解,对所得到的解析解进行了分析,得到了非线性RLC电路的一些普遍特征。

Besides,we will give a new proof to the LaGrange s theorem.

本文对微分中值定理的传统教学提出了改革的方法 ,并对常规所设的辅助函数进行了综合比较 ,给出了各种辅助函数的几何模型 ;另外 ,还另辟溪径 ,给出一个拉格朗日定理的独立证法。

Aiming at the instability of an apple picking robot arm in the course of picking,a mathematic model was constructed based on the Lagrange mechanical equation and a controller of apple picking robot arm was designed.

为解决苹果采摘机器人机械手臂控制的稳定性问题,基于拉格朗日力学原理建立了机器人手臂数学模型,设计了机器人手臂控制器。