Turbulent shear flows, such as those occurring in the wall region of turbulent boundary
layers, show a substantial increase of intermittency in comparison with isotropic conditions.
This suggests a close link between anisotropy and intermittency. However, a rigorous
statistical description of anisotropic flows is, in most cases, hampered by the inhomogeneity
of the field. This difficulty is absent for homogeneous shear flow. For this flow the scale-by-
scale budget is discussed here by using the appropriate form of the Kámán–Howarth …

Turbulent shear flows, such as those occurring in the wall region of turbulent boundary
layers, manifest a substantial increase of intermittency with respect to isotropic conditions.
This suggests a close link between anisotropy and intermittency. However, a rigorous
statistical description of anisotropic flows is, in most cases, hampered by the inhomogeneity
of the field. This difficulty is absent for the homogeneous shear flow. For this flow the scale
by scale budget is discussed here by using the appropriate form of the Karman-Howarth …