Department of Physics, Eindhoven University of Technology, The Netherlands.
Phys Rev Lett. 2011 Nov 18;107(21):214502. doi: 10.1103/PhysRevLett.107.214502.
The statistical properties of the Lagrangian acceleration vector of passive tracers in statistically steady rotating turbulence is studied by particle tracking velocimetry. Direct effects of the background rotation are the suppression of high-acceleration events parallel to the (vertical) rotation axis, the enhancement of high-acceleration events for the horizontal acceleration, and the strong amplification of the autocorrelation of the acceleration component perpendicular to both the rotation vector Ω and local velocity vector u. The autocorrelation of the acceleration component in the plane set up by Ω and u is only mildly enhanced.
通过粒子追踪测速法研究了在统计稳定旋转湍流中被动示踪粒子的拉格朗日加速度矢量的统计特性。背景旋转的直接影响是抑制与（垂直）旋转轴平行的高加速度事件，增强水平加速度的高加速度事件，以及对垂直于旋转向量 Ω 和局部速度向量 u 的加速度分量的自相关的强烈放大。Ω 和 u 建立的平面内的加速度分量的自相关仅略有增强。
