Author: National Aeronautics and Space Adm NasaPublisher: Independently Published
ISBN: 9781728901480
Category : Science
Languages : en
Pages : 30
Book Description
The analytic expression of the time evolution of the Reynolds stress anisotropy tensor in all planar homogeneous flows is obtained by exact integration of the modeled differential Reynolds stress equations. The procedure is based on results of tensor representation theory, is applicable for general pressure-strain correlation tensors, and can account for any additional turbulence anisotropy effects included in the closure. An explicit solution of the resulting system of scalar ordinary differential equations is obtained for the case of a linear pressure-strain correlation tensor. The properties of this solution are discussed, and the dynamic behavior of the Reynolds stresses is studied, including limit cycles and sensitivity to initial anisotropies. Jongen, T. and Gatski, T. B. Langley Research Center RTOP 522-31-81-03