LES of Turbulent Channel Flow
A numerical study on turbulent channel flow of Re=2,800 based on channel
half height, bulk velocity and Mach=0.1 was performed by using the newly
developed semi-implicit high order research code. Three-level of grid
systems 48x48x49/64x64x65/80x80x81 are used for this study. Mean flow and
turbulent statistic are compared with
Moser, Kim and Mansour's DNS results (Physics of fluids,
v 11, pp 943-945, 1999; used mesh: 128x128x129). The principal objects of this
study are (1) the validation of research code for wall-bounded flow and (2) the
generation of turbulent inlet boundary condition for asymmetric planar diffuser
flow.
- Animation of vortical structure near the lower wall of channel
identified by second invariant Q=0.5; Contour on cross section is
streamwise velocity.
- Comparison of Mean Streamwise Velocity(log scale)
- Comparison of RMS of Velocity Fluctuations
- Comparison of Reynolds Stresses
Prof. Frankel's MAIN PAGE
