Numerical Studies of the Structure of Turbulent Shear Flow
Abstract
Renormalization group methods (RNG) have been applied to large eddy simulations of wall regions of channel flows and spectral element RNG simulations of flows in complex geometries were explored. The results predicted wall region streaks accurately at much less spatial resolution than earlier methods. The methods were extended to compressible flows. They have been used to show that the shock region is characterized by large negative values of the divergence indicating tube-like structures. High enstrophy regions reside outside the shock regions. High vorticity regions in incompressible flow tend to be concentrated in tubes, while in compressible flows they tend to be concentrated in sheets. RNG was also applied to k-e modelling of the flow over a backstep. Full simulations were also completed for large Reynolds number turbulence. Keywords: Turbulence, Simulation renormalization group.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1990
- Accession Number
- ADA228747
Entities
People
- Steven A. Orszag
Organizations
- Princeton University