Finite time blow up for solutions to a degenerate drift-diffusion equation for a fast diffusion case

Finite time blow up for solutions to a degenerate drift-diffusion equation for a fast diffusion case
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快速扩散情况下简并漂移扩散方程解的有限时间爆炸

DOI:
10.1088/1361-6544/ab0069
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发表时间:
2019
期刊:
影响因子:
1.7
通讯作者:
Takayoshi Ogawa
Takayoshi Ogawa
中科院分区:
数学2区
文献类型:
--
作者:
Masaki Kurokiba;Takayoshi Ogawa

文献摘要

相似文献

考虑一类具有快速扩散指数的退化漂移扩散系统柯西问题的时间整体解的不存在性。我们证明了当初始数据满足一定的自由能条件时,具有扩散指数的快速扩散情形的解在有限时间内爆破。我们还证明了径向对称情形在没有有限矩条件下的有限时间爆破。
We consider the non-existence of a time global solution to the Cauchy problem of a degenerate drift-diffusion system with a fast-diffusion exponent. We show that the solution for fast-diffusion cases with the diffusion exponent blows up in a finite time if the initial data satisfy certain conditions involving the free energy. We also show the finite-time blow-up for the radially symmetric case without a finite moment condition.