Loading...
Please wait, while we are loading the content...
Similar Documents
Implicit large-eddy simulations of zero-pressure gradient, turbulent boundary layer
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sekhar, Susheel Mansour, Nagi N. |
| Copyright Year | 2015 |
| Description | A set of direct simulations of zero-pressure gradient, turbulent boundary layer flows are conducted using various span widths (62-630 wall units), to document their influence on the generated turbulence. The FDL3DI code that solves compressible Navier-Stokes equations using high-order compact-difference scheme and filter, with the standard recycling/rescaling method of turbulence generation, is used. Results are analyzed at two different Re values (500 and 1,400), and compared with spectral DNS data. They show that a minimum span width is required for the mere initiation of numerical turbulence. Narrower domains ((is) less than 100 w.u.) result in relaminarization. Wider spans ((is) greater than 600 w.u.) are required for the turbulent statistics to match reference DNS. The upper-wall boundary condition for this setup spawns marginal deviations in the mean velocity and Reynolds stress profiles, particularly in the buffer region. |
| File Size | 1769006 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150023002 |
| Archival Resource Key | ark:/13960/t56f0vg7h |
| Language | English |
| Publisher Date | 2015-01-04 |
| Access Restriction | Open |
| Subject Keyword | Turblent Boundary Layer Zero-pressure Gradient Large-eddy Navier-stokes Equation Reynolds Stress Turbulence Turbulent Flow Large Eddy Simulation Direct Numerical Simulation Turbulent Boundary Layer Velocity Distribution Pressure Gradients Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
