Entropy-bounded solutions to the 3D compressible heat-conducting magnetohydrodynamic equations with vacuum at infinity
Entropy-bounded solutions to the 3D compressible heat-conducting magnetohydrodynamic equations with vacuum at infinity
复制标题
无穷远真空下 3D 可压缩导热磁流体动力学方程的熵有界解
DOI:
10.1016/j.jde.2023.02.020
复制
发表时间:
2022-05
影响因子:
2.4
通讯作者:
Xin Zhong
中科院分区:
文献类型:
--
作者:
Yang Liu;Xin Zhong
The mathematical analysis on the behavior of the entropy for viscous, compressible, and heat conducting magnetohydrodynamic flows near the vacuum region is a challenging problem as the governing equation for entropy is highly degenerate and singular in the vacuum region. In our previous work [38], we investigate the global existence of strong solutions to the three-dimensional (3D) compressible heat-conducting magnetohydrodynamic equations with vacuum at infinity. However, it is unknown whether the entropy remains its boundedness or not? Thus, the main novelty of this paper is to give a positive response to this problem. In fact, we show that the uniform boundedness of the entropy and the L 2 regularities of the velocity and temperature can be propagated provided that the initial density decays suitably slow at infinity. Modified De Giorgi type iteration techniques and useful singularly weighted estimates are developed to deduce the lower and upper bounds on the entropy.
登录
查看更多内容
影响因子:
1.1
作者:
X. Zhong
通讯作者:
X. Zhong
DOI:
10.14989/doctor.k3193
发表时间:
1984-09
期刊:
--
影响因子:
--
作者:
S. Kawashima
通讯作者:
S. Kawashima
DOI:
10.1142/s0218202511500102
发表时间:
2012-04
影响因子:
3.5
作者:
Jianwen Zhang;Xinying Xu
通讯作者:
Xinying Xu
影响因子:
2.4
作者:
Wang Yongfu
通讯作者:
Wang Yongfu
影响因子:
1.7
作者:
E. Feireisl;Yang Li
通讯作者:
E. Feireisl;Yang Li