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Control of separated flow past a cylinder using tangential wall jet blowing
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Oh, Sejong Roberts, Leonard |
| Copyright Year | 1989 |
| Description | A theoretical analysis is conducted to study the effect of a tangential wall jet on the control of two dimensional separated flow past a circular cylinder. For a tangential wall jet, the mathematical model derived previously is used and the vortex cloud method is adopted for the calculation of the external flow field. For certain limiting cases, the governing equations are simplified and closed forms of solutions for the wall jet parameters can be obtained. It is observed that the wall jet is very efficient in reducing drag by delaying the separation point in the range of small blowing strength. The suction force induced by the wall jet is negligible to the drag due to the external stream. However this suction increases the drag when the blowing strength is large. |
| File Size | 836800 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890019955 |
| Archival Resource Key | ark:/13960/t0qr9qd87 |
| Language | English |
| Publisher Date | 1989-07-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Suction Aerodynamic Drag Turbulent Flow Fluid Dynamics Wall Jets Flow Distribution Airfoils Mathematical Models Two Dimensional Flow Separated Flow Circular Cylinders Pressure Gradients Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
