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Stochastic estimation and non-linear wall-pressure sources in a separating/reattaching flow
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hudy, L. Humphreys Jr., W. M. Naguib, A. |
| Copyright Year | 2002 |
| Description | Simultaneous wall-pressure and PIV measurements are used to study the conditional flow field associated with surface-pressure generation in a separating/reattaching flow established over a fence-with-splitter-plate geometry. The conditional flow field is captured using linear and quadratic stochastic estimation based on the occurrence of positive and negative pressure events in the vicinity of the mean reattachment location. The results shed light on the dominant flow structures associated with significant wall-pressure generation. Furthermore, analysis based on the individual terms in the stochastic estimation expansion shows that both the linear and non-linear flow sources of the coherent (conditional) velocity field are equally important contributors to the generation of the conditional surface pressure. |
| File Size | 542577 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030012921 |
| Archival Resource Key | ark:/13960/t4jm7702k |
| Language | English |
| Publisher Date | 2002-01-01 |
| Access Restriction | Open |
| Subject Keyword | Numerical Analysis Wall Pressure Velocity Distribution Separated Flow Stochastic Processes Flow Distribution Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
