Weak vorticity formulation of 2D Euler equations with white noise initial condition

被引:28
|
作者
Flandoli, Franco [1 ]
机构
[1] Scuola Normale Super Pisa, Classe Sci, Piazza Cavalieri 7, Pisa, Italy
关键词
2D Euler equations; point voritices; random initial conditions; white noise; DIFFERENTIAL-EQUATIONS; VECTOR-FIELDS; FLOWS; INVARIANCE;
D O I
10.1080/03605302.2018.1467448
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The 2D Euler equations with random initial condition distributed as a certain Gaussian measure are considered. The theory developed by S. Albeverio and A.-B. Cruzeiro is revisited, following the approach of weak vorticity formulation. A solution is constructed as a limit of random point vortices. This allows to prove that it is also limit of L-vorticity solutions. The result is generalized to initial measures that have a continuous bounded density with respect to the original Gaussian measure.
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页码:1102 / 1149
页数:48
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