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The effect of periodic-unsteady wakes, curvature, and pressure gradient on boundary-layer transition
| dc.creator | Radke, Robert Edward | |
| dc.date.accessioned | 2012-06-07T22:38:05Z | |
| dc.date.available | 2012-06-07T22:38:05Z | |
| dc.date.created | 1994 | |
| dc.date.issued | 1994 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-1994-THESIS-R1293 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references. | en |
| dc.description.abstract | Boundary-layer transition on a concave curved plate has been investigated with and without periodic-unsteady inlet flow at zero and negative pressure gradients. The periodicunsteady wakes were created using a rotating squirrel-cage type wake generator. The transition procedure without wakes present appeared to be classical Tollmien-Schhchting wave formations that were possibly modified by longitudinal Gbrtier vortices. The presence of a negative pressure gradient delayed the onset of transition over that of a zero pressure gradient. A complete ensemble-averaged visualization of periodic-unsteady transition is also presented. The wake strip initiated a disturbance into the boundary-layer at the leading edge of the plate. Afterwards, the wake strip in the free-stream and the disturbance in the boundary-layer appeared to independently convect downstream. Larninar regions were observed between wakes far beyond the streamwise position they are confined to in the corresponding case without periodic-unsteady wakes. In addition, a turbomachinery cascade test facility with periodic-unsteady inlet flow was designed and manufactured for the next generation of research in this area. | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | mechanical engineering. | en |
| dc.subject | Major mechanical engineering. | en |
| dc.title | The effect of periodic-unsteady wakes, curvature, and pressure gradient on boundary-layer transition | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | mechanical engineering | en |
| thesis.degree.name | M.S. | en |
| thesis.degree.level | Masters | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
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