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Exploratory investigation of the effect of porous surfaces on hypersonic turbulent boundary layers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Watson, R. D. |
| Copyright Year | 1979 |
| Description | Four different test surfaces were studied to determine the effect of porous walls on the characteristics of a hypersonic turbulent flat-plate boundary layer. The investigation was an attempt to decrease the surface shear of the boundary layer by transmitting fluctuating pressure energy through the wall and absorbing it in a cavity beneath the wall. Pitot surveys were made at two locations, schlieren photographs of the boundary layer were taken, and hot-wire measurements in the flow above the boundary layer were made to determine whether the surfaces affected the turbulent boundary layer. Neither an increase nor a decrease in surface shear or boundary-layer growth was detected. Tabulations of the pitot data are included. |
| File Size | 3039917 |
| Page Count | 60 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790006160 |
| Archival Resource Key | ark:/13960/t5jb0zj3s |
| Language | English |
| Publisher Date | 1979-01-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Flat Plates Noise Reduction Shear Flow Turbulent Boundary Layer Flow Visualization Porous Walls Porous Boundary Layer Control Hypersonic Boundary Layer Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
