论文标题
均匀可压缩湍流中速度梯度的低阶矩
Low-order moments of the velocity gradient in homogeneous compressible turbulence
论文作者
论文摘要
我们从速度梯度MIJ = DUI/DXJ的二级和三阶矩中的第一原理分析关系中得出，可压缩湍流中的DUI/DXJ，这在不可压缩的流中概括了已知的关系。这些关系虽然是用于均匀流的，但大约适用于混合层。我们还讨论了如何应用这些关系以实验确定速度梯度的所有第二和第三矩。
We derive from first principles analytic relations for the second and third order moments of the velocity gradient mij = dui/dxj in compressible turbulence, which generalize known relations in incompressible flows. These relations, although derived for homogeneous flows, hold approximately for a mixing layer. We also discuss how to apply these relations to determine all the second and third moments of the velocity gradient experimentally.
