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arXiv 0910.5672math.APmath-phmath.MP
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关于多元Burgers方程和不可压斯托克斯方程(上)

On the multivariate Burgers equation and the incompressible Navier-Stokes equation (Part I)

Joerg Kampen

摘要:

我们给出了一个构造性的整体存在性证明,证明了定义在全空间或与n-环面同构的区域上的多元粘性Burgers方程组的整体存在性,其时间范围可达无穷大,且C^{ \infty }-数据(如果问题是在全空间上提出的,则满足某些增长条件).证明是由时间离散的半显式摄动展开变换坐标的收敛性是由某些先验估计。该格式对于定义流体动力学相关方程组的计算是有用的。

英文摘要:

We provide a constructive global existence proof for the multivariate viscous Burgers equation system defined on the whole space or on a domain isomorphic to the n-torus and with time horizon up to infinity and C^{\infty}- data (satisfying some growth conditions if the problem is posed on the whole space). The proof is by a time discretized semiexplicit perturbative expansion in transformed coordinates where the convergence is guaranteed by certain a priori estimates. The scheme is useful in order to define computation for related equation systems of fluid dynamics.

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