论文标题
欧拉湍流和热力学平衡
Euler Turbulence and thermodynamic equilibrium
论文作者
论文摘要
我们使用与Delta相关的速度场对EULER湍流进行独特的直接数值模拟，并分别报告3D和2D流的$ k^2 $和$ K $ Energy Spectra，零能量磁通量，零能量磁通量，以及Maxwell-Boltzmann的速度场分布。这些是对湍流绝对平衡理论的预测的直接验证。对于连贯的涡流作为初始条件，Euler湍流通过称为热化的过程从非平衡状态的混合物转变为平衡状态。在这封信中，我们提出了欧拉湍流中热化的模型。
We perform a unique direct numerical simulation of Euler turbulence using delta-correlated velocity field as an initial condition, and report a full range of $k^2$ and $k$ energy spectra for 3D and 2D flows respectively, zero energy flux, and Maxwell-Boltzmann distribution for the velocity field. These are direct verification of the predictions of the absolute equilibrium theory of turbulence. For a coherent vortex as an initial condition, Euler turbulence transitions from a mixture of nonequilibrium-equilibrium state to a equilibrium state through a process called thermalization. In this letter, we present a model for thermalization in Euler turbulence.
