摘要
对一阶拟线性双曲型方程组的Goursat问题,利用特征线方法及波分解公式,在方程组不是弱线性退化的假设下,当特征边界上给出的边界函数C1范数充分小、且满足一定衰减性时,得到其C1解的破裂机制及关于生命跨度的渐近估计.
Under the assumptions that the quasilinear hyperbolic system is not weakly linearly degenerate and the boundary functions given on the characteristic boundaries possess small C 1 norms and certain decaying properties, by using the characteristic method and the decomposition for waves, we obtain the blow-up mechanism and the asymptotic behavior of the life-span of the C 1 solution to the Goursat problem.
出处
《工程数学学报》
CSCD
北大核心
2012年第1期131-153,共23页
Chinese Journal of Engineering Mathematics
关键词
GOURSAT问题
弱线性退化
经典解
拟线性双曲组
生命跨度
Goursat problem; weak linear degeneracy; classical solution; quasilinear hyperbolic system; life-span of classical solution;