HOMOGENEOUS TURBULENCE SUBJECTED TO ROTATION-DOMINATED PLANE DISTORTION

A new configuration of distorted homogeneous turbulence is investigate d in the domain of rotation-dominated elliptical flows. The experiment al results are compared with ''exact'' numerical solutions obtained in Fourier space for the linear part of the problem. The inherently peri odic character of the flow results in typical oscillatory variations o f the anisotropy and the pressure-strain correlations. A new two-point closure approach of the EDQNM type is proposed for the nonlinear prob lem; it is based on a representation of the spectral tensor by scalar functions expanded in terms of spherical harmonics.