一阶非线性偏微分方程Burgers方程的熵解问题研究.doc
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一阶非线性偏微分方程Burgers方程的熵解问题研究
目录
1 摘要 2
2 Burgers 方程的背景知识 4
2.1 Burgers 方程的背景知识. 4
2.2 非 (拟) 线性守恒律方程. 5
2.2.1 基本概念与定义5
2.2.2 守恒律方程的特征线方法及局部经典解. 8
2.3 间断解. 12
2.3.1 解的定义. 12
2.3.2 Rankine-Hugoniot 条件. 13
2.3.3 熵条件、激波和熵解. 13
2.4 黎曼问题. 16
2.4.1 Burgers 方程的黎曼问题. 17
3 应用实例:从行人过马路遇到红灯说开去 21
4 致谢 24
5 参考文献 251 摘要
Abstract
This paper mainly studies the nonlinear partial di?erential equations
of rst order entropy solutions for Burgers equation problem. We ?rst
introduce some basic knowledge of Nonlinear Conservation Laws. Next,
how to apply characteristics analysis method for the initial value problems
of Buergers equations is described, and therefore, the two forms of blow
up results of Bergurs equations are deduced with given a smooth solution
of the existence of local conditions. Finally, we will u