The partially integrated transport modeling (PITM) method first introduced in Refs. Schiestel and Dejoan (Theor Comput Fluid Dyn 18:443, 2005) and in Chaouat and Schiestel (Phys Fluids 17:065106, 2005) provides a continuous approach for hybrid RANS-LES simulations. Inspired from the multiple scale approach, the basis of the development of the method is the spectral space in quasi-homogeneous turbulence. The PITM method embodies a partitioning control function that monitors the ratio of subfilter energy to total turbulent energy by reference to the cutoff wavenumber location. How this procedure behaves in inhomogeneous flows is an important question. The present paper demonstrates that the same control function can be used both in homogeneous and in non-homogeneous flows as well. Further on, an analysis of the effect of anisotropic filters generally used for wall flows is conducted for computing the equivalent cutoff wavenumber suitable for determining the subfilter energy of the spectrum and see how it interferes with control function. Illustrations in the turbulent plane channel flow are given that confirm the efficiency of the procedure and DNS data have been used to support and supplement the discussion.

参考文献中首次引入的部分集成运输建模（PITM）方法。Schiestel和Dejoan（Theor Comput Fluid Dyn 18：443，2005）以及Chaouat和Schiestel（Phys Fluids 17：065106，2005）提供了一种用于混合RANS-LES模拟的连续方法。受多尺度方法启发，该方法的发展基础是准均一湍流中的光谱空间。PITM方法体现了分区控制功能，该功能通过参考截止波数位置来监视子滤波器能量与总湍流能量之比。这个过程在不均匀流动中的行为方式是一个重要的问题。本文证明了相同的控制功能可用于均质流和非均质流。进一步，对通常用于壁流的各向异性滤波器的效果进行了分析，以计算适合确定频谱的子滤波器能量的等效截止波数，并查看其如何干扰控制功能。给出了湍流平面通道流中的图示，这些图示确认了该过程的效率，并且DNS数据已用于支持和补充讨论。