选题：基于二维网格的流体动力学仿真

1、题目内容

编写一个二维的流体动力学模拟程序，以估算Navier-Stokes 方程下不可压缩的均匀流体的行为。

2、题目分析

  题目的描述很简单，我们需要关注的有两个部分，第一个是使用二维网格的方法进行模拟，第二个是需要对二维下的N-S方程进行相应的求解实现。   在N-S方程之前我们先看无粘性不可压缩流体下的欧拉方程：

$$\frac{\partial{V}}{\partial{t}}+V(\triangledown ·V)=-\frac{1}{\rho}\triangledown p +f$$

Syntax Parser Report

1、Motivation & Content description

Build a syntax parser program to read stream of characters and CFG and show the sequence of devirations by using top-down syntax analyzing method.

Requirements:

(1) Input

  Stream of characters   CFG(Combination of CFGs of some classes of sentences)

Lexical Analyzer Report

1、Motivation & Content description

Build a lexical analyzer program to read stream of characters and show the sequence of tokens.

Requirements:

(1) Input:

  Stream of characters

  REs(The number of REs is decided by yourself)