Global smooth axisymmetric solutions to 2D compressible Euler equations of Chaplygin gases with non-zero vorticity
Global smooth axisymmetric solutions to 2D compressible Euler equations of Chaplygin gases with non-zero vorticity
复制标题
非零涡度 Chaplygin 气体二维可压缩欧拉方程的全局光滑轴对称解
DOI:
10.1016/j.jde.2019.03.038
复制
发表时间:
2018-10
期刊:
影响因子:
--
通讯作者:
Yin Huicheng
中科院分区:
文献类型:
--
作者:
Hou Fei;Yin Huicheng
For 2D compressible isentropic Euler equations of polytropic gases, S. Alinhac establishes that the axisymmetric smooth solution blows up. In the present paper, for 2D compressible isentropic Euler equations of Chaplygin gases, we show that the small perturbed smooth solution exists globally when the rotationally invariant initial data are a perturbation of size ε> 0 of a rest state. Near the light cone, 2D Euler equations of Chaplygin gases can be transformed into a second order quasilinear wave equation, which satisfies both the null conditions. This will lead to that the corresponding second order quasilinear wave equation admits a global smooth solution near the light cone. However, away from the light cone, the hydrodynamical waves have no decay in time and strongly affect the related acoustical waves. By introducing a nonlinear ODE, we can distinguish the fast decay part and non-decay part so that the global energy estimates are derived.
登录
查看更多内容
影响因子:
3
作者:
D. Christodoulou
通讯作者:
D. Christodoulou
影响因子:
2.5
作者:
P. Godin
通讯作者:
P. Godin
DOI:
10.1090/ulect/002
发表时间:
1990
期刊:
--
影响因子:
--
作者:
F. John
通讯作者:
F. John
影响因子:
3.1
作者:
J. Luk;Jared Speck
通讯作者:
J. Luk;Jared Speck
影响因子:
64.8
作者:
M. Lighthill
通讯作者:
M. Lighthill