Liouville type theorems for the Euler and the Navier–Stokes equations

Liouville type theorems for the Euler and the Navier–Stokes equations
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欧拉和纳维-斯托克斯方程的刘维尔型定理

DOI:
10.1016/j.aim.2011.07.020
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
D. Chae
D. Chae
中科院分区:
--
文献类型:
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作者:
D. Chae

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证明了Navier-Stokes方程和Euler方程弱解的Liouville型定理。特别地,如果压力满足p∈L1(0,T;L1(RN)),其中[公式:见正文],则相应的速度应该是平凡的,即RN×(0,T)上的v=0。特别地,这是当p∈L1(0,T;Hq(RN))时的情况,其中Hq(RN),q∈(0,1],哈代空间。另一方面,如果p∈L1(0,T;L1(RN)),则我们在每个分量上具有能量均分,[公式:见正文]。类似的结果也适用于磁流体动力学方程。
We prove Liouville type theorems for weak solutions of the Navier–Stokes and the Euler equations. In particular, if the pressure satisfies p∈L1(0,T;L1(RN)) with [Formula: see text] , then the corresponding velocity should be trivial, namely v=0 on RN×(0,T). In particular, this is the case when p∈L1(0,T;Hq(RN)), where Hq(RN), q∈(0,1], the Hardy space. On the other hand, we have equipartition of energy over each component, if p∈L1(0,T;L1(RN)) with [Formula: see text] . Similar results hold also for the magnetohydrodynamic equations.