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Calculations of unsteady turbulent boundary layers with flow reversal
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nash, J. F. Patel, V. C. |
| Copyright Year | 1975 |
| Description | The results are presented of a series of computational experiments aimed at studying the characteristics of time-dependent turbulent boundary layers with embedded reversed-flow regions. A calculation method developed earlier was extended to boundary layers with reversed flows for this purpose. The calculations were performed for an idealized family of external velocity distributions, and covered a range of degrees of unsteadiness. The results confirmed those of previous studies in demonstrating that the point of flow reversal is nonsingular in a time-dependent boundary layer. A singularity was observed to develop downstream of reversal, under certain conditions, accompanied by the breakdown of the boundary-layer approximations. A tentative hypothesis was advanced in an attempt to predict the appearance of the singularity, and is shown to be consistent with the calculated results. |
| File Size | 1625904 |
| Page Count | 56 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750014554 |
| Archival Resource Key | ark:/13960/t7sn4zn8w |
| Language | English |
| Publisher Date | 1975-05-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Time Dependence Numerical Analysis Reversed Flow Turbulent Boundary Layer Unsteady Flow Velocity Distribution Two Dimensional Flow Boundary Layer Equations 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 |
