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Instability of a supersonic boundary-layer with localized roughness
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Iaccarino, Gianluca Shaqfeh, Eric S. G. Marxen, Olaf |
| Copyright Year | 2010 |
| Description | A localized 3-D roughness causes boundary-layer separation and (weak) shocks. Most importantly, streamwise vortices occur which induce streamwise (low U, high T) streaks. Immersed boundary method (volume force) suitable to represent roughness element in DNS. Favorable comparison between bi-global stability theory and DNS for a "y-mode" Outlook: Understand the flow physics (investigate "z-modes" in DNS through sinuous spanwise forcing, study origin of the beat in DNS). |
| File Size | 2366349 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100018567 |
| Archival Resource Key | ark:/13960/t0ms8q62p |
| Language | English |
| Publisher Date | 2010-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Boundary Layer Separation Stability Fluid Dynamics Direct Numerical Simulation Vortices Synchronism Surface Roughness Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |